src/base/bittorrent/infohash.cpp

   1 /*
   2  * Bittorrent Client using Qt and libtorrent.
   3  * Copyright (C) 2015, 2021  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 "infohash.h"
  30
  31 #include <QHash>
  32
  33 const int TorrentIDTypeId = qRegisterMetaType<BitTorrent::TorrentID>();
  34
  35 BitTorrent::InfoHash::InfoHash(const WrappedType &nativeHash)
  36     : m_valid {true}
  37     , m_nativeHash {nativeHash}
  38 {
  39 }
  40
  41 #ifdef QBT_USES_LIBTORRENT2
  42 BitTorrent::InfoHash::InfoHash(const SHA1Hash &v1, const SHA256Hash &v2)
  43     : InfoHash {WrappedType(v1, v2)}
  44 {
  45 }
  46 #endif
  47
  48 bool BitTorrent::InfoHash::isValid() const
  49 {
  50     return m_valid;
  51 }
  52
  53 bool BitTorrent::InfoHash::isHybrid() const
  54 {
  55 #ifdef QBT_USES_LIBTORRENT2
  56     return (m_nativeHash.has_v1() && m_nativeHash.has_v2());
  57 #else
  58     return false;
  59 #endif
  60 }
  61
  62 SHA1Hash BitTorrent::InfoHash::v1() const
  63 {
  64 #ifdef QBT_USES_LIBTORRENT2
  65     return (m_nativeHash.has_v1() ? SHA1Hash(m_nativeHash.v1) : SHA1Hash());
  66 #else
  67     return {m_nativeHash};
  68 #endif
  69 }
  70
  71 SHA256Hash BitTorrent::InfoHash::v2() const
  72 {
  73 #ifdef QBT_USES_LIBTORRENT2
  74     return (m_nativeHash.has_v2() ? SHA256Hash(m_nativeHash.v2) : SHA256Hash());
  75 #else
  76     return {};
  77 #endif
  78 }
  79
  80 BitTorrent::TorrentID BitTorrent::InfoHash::toTorrentID() const
  81 {
  82 #ifdef QBT_USES_LIBTORRENT2
  83     return m_nativeHash.get_best();
  84 #else
  85     return {m_nativeHash};
  86 #endif
  87 }
  88
  89 BitTorrent::InfoHash::operator WrappedType() const
  90 {
  91     return m_nativeHash;
  92 }
  93
  94 BitTorrent::TorrentID BitTorrent::TorrentID::fromString(const QString &hashString)
  95 {
  96     return {BaseType::fromString(hashString)};
  97 }
  98
  99 BitTorrent::TorrentID BitTorrent::TorrentID::fromInfoHash(const BitTorrent::InfoHash &infoHash)
 100 {
 101     return infoHash.toTorrentID();
 102 }
 103
 104 BitTorrent::TorrentID BitTorrent::TorrentID::fromSHA1Hash(const SHA1Hash &hash)
 105 {
 106     return {hash};
 107 }
 108
 109 BitTorrent::TorrentID BitTorrent::TorrentID::fromSHA256Hash(const SHA256Hash &hash)
 110 {
 111     return BaseType::UnderlyingType(static_cast<typename SHA256Hash::UnderlyingType>(hash).data());
 112 }
 113
 114 std::size_t BitTorrent::qHash(const BitTorrent::TorrentID &key, const std::size_t seed)
 115 {
 116     return ::qHash(static_cast<TorrentID::BaseType>(key), seed);
 117 }
 118
 119 std::size_t BitTorrent::qHash(const InfoHash &key, const std::size_t seed)
 120 {
 121     return qHashMulti(seed, key.v1(), key.v2());
 122 }
 123
 124 bool BitTorrent::operator==(const BitTorrent::InfoHash &left, const BitTorrent::InfoHash &right)
 125 {
 126     return (static_cast<InfoHash::WrappedType>(left) == static_cast<InfoHash::WrappedType>(right));
 127 }