mirror of
https://github.com/qbittorrent/qBittorrent.git
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121 lines
3.8 KiB
C++
121 lines
3.8 KiB
C++
/*
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* Bittorrent Client using Qt and libtorrent.
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* Copyright (C) 2015 Vladimir Golovnev <glassez@yandex.ru>
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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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#include "magneturi.h"
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#include <libtorrent/bencode.hpp>
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#include <libtorrent/error_code.hpp>
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#include <libtorrent/magnet_uri.hpp>
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#include <libtorrent/sha1_hash.hpp>
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#include <QRegularExpression>
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#include <QUrl>
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#include "infohash.h"
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namespace
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{
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bool isBitTorrentInfoHash(const QString &string)
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{
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// There are 2 representations for BitTorrent info hash:
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// 1. 40 chars hex-encoded string
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// == 20 (SHA-1 length in bytes) * 2 (each byte maps to 2 hex characters)
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// 2. 32 chars Base32 encoded string
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// == 20 (SHA-1 length in bytes) * 1.6 (the efficiency of Base32 encoding)
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const int SHA1_HEX_SIZE = BitTorrent::InfoHash::length() * 2;
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const int SHA1_BASE32_SIZE = BitTorrent::InfoHash::length() * 1.6;
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return ((((string.size() == SHA1_HEX_SIZE))
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&& !string.contains(QRegularExpression(QLatin1String("[^0-9A-Fa-f]"))))
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|| ((string.size() == SHA1_BASE32_SIZE)
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&& !string.contains(QRegularExpression(QLatin1String("[^2-7A-Za-z]")))));
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}
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}
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using namespace BitTorrent;
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MagnetUri::MagnetUri(const QString &source)
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: m_valid(false)
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, m_url(source)
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{
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if (source.isEmpty()) return;
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if (isBitTorrentInfoHash(source))
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m_url = QLatin1String("magnet:?xt=urn:btih:") + source;
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lt::error_code ec;
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lt::parse_magnet_uri(m_url.toStdString(), m_addTorrentParams, ec);
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if (ec) return;
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m_valid = true;
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m_hash = m_addTorrentParams.info_hash;
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m_name = QString::fromStdString(m_addTorrentParams.name);
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m_trackers.reserve(m_addTorrentParams.trackers.size());
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for (const std::string &tracker : m_addTorrentParams.trackers)
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m_trackers.append(lt::announce_entry {tracker});
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m_urlSeeds.reserve(m_addTorrentParams.url_seeds.size());
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for (const std::string &urlSeed : m_addTorrentParams.url_seeds)
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m_urlSeeds.append(QUrl(QString::fromStdString(urlSeed)));
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}
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bool MagnetUri::isValid() const
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{
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return m_valid;
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}
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InfoHash MagnetUri::hash() const
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{
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return m_hash;
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}
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QString MagnetUri::name() const
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{
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return m_name;
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}
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QVector<TrackerEntry> MagnetUri::trackers() const
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{
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return m_trackers;
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}
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QVector<QUrl> MagnetUri::urlSeeds() const
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{
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return m_urlSeeds;
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}
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QString MagnetUri::url() const
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{
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return m_url;
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}
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lt::add_torrent_params MagnetUri::addTorrentParams() const
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{
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return m_addTorrentParams;
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}
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