src/base/bittorrent/customstorage.h

   1 /*
   2  * Bittorrent Client using Qt and libtorrent.
   3  * Copyright (C) 2020  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 #pragma once
  30
  31 #include <libtorrent/aux_/vector.hpp>
  32 #include <libtorrent/fwd.hpp>
  33
  34 #include <QString>
  35
  36 #include "base/path.h"
  37
  38 #ifdef QBT_USES_LIBTORRENT2
  39 #include <libtorrent/disk_interface.hpp>
  40 #include <libtorrent/file_storage.hpp>
  41 #include <libtorrent/io_context.hpp>
  42
  43 #include <QHash>
  44 #else
  45 #include <libtorrent/storage.hpp>
  46 #endif
  47
  48 #ifdef QBT_USES_LIBTORRENT2
  49 std::unique_ptr<lt::disk_interface> customDiskIOConstructor(
  50         lt::io_context &ioContext, lt::settings_interface const &settings, lt::counters &counters);
  51 std::unique_ptr<lt::disk_interface> customPosixDiskIOConstructor(
  52         lt::io_context &ioContext, lt::settings_interface const &settings, lt::counters &counters);
  53 std::unique_ptr<lt::disk_interface> customMMapDiskIOConstructor(
  54         lt::io_context &ioContext, lt::settings_interface const &settings, lt::counters &counters);
  55
  56 class CustomDiskIOThread final : public lt::disk_interface
  57 {
  58 public:
  59     explicit CustomDiskIOThread(std::unique_ptr<libtorrent::disk_interface> nativeDiskIOThread);
  60
  61     lt::storage_holder new_torrent(const lt::storage_params &storageParams, const std::shared_ptr<void> &torrent) override;
  62     void remove_torrent(lt::storage_index_t storageIndex) override;
  63     void async_read(lt::storage_index_t storageIndex, const lt::peer_request &peerRequest
  64                     , std::function<void (lt::disk_buffer_holder, const lt::storage_error &)> handler
  65                     , lt::disk_job_flags_t flags) override;
  66     bool async_write(lt::storage_index_t storageIndex, const lt::peer_request &peerRequest
  67                      , const char *buf, std::shared_ptr<lt::disk_observer> diskObserver
  68                      , std::function<void (const lt::storage_error &)> handler, lt::disk_job_flags_t flags) override;
  69     void async_hash(lt::storage_index_t storageIndex, lt::piece_index_t piece, lt::span<lt::sha256_hash> hash, lt::disk_job_flags_t flags
  70                     , std::function<void (lt::piece_index_t, const lt::sha1_hash &, const lt::storage_error &)> handler) override;
  71     void async_hash2(lt::storage_index_t storage, lt::piece_index_t piece, int offset, lt::disk_job_flags_t flags
  72                      , std::function<void (lt::piece_index_t, const lt::sha256_hash &, const lt::storage_error &)> handler) override;
  73     void async_move_storage(lt::storage_index_t storage, std::string path, lt::move_flags_t flags
  74                             , std::function<void (lt::status_t, const std::string &, const lt::storage_error &)> handler) override;
  75     void async_release_files(lt::storage_index_t storage, std::function<void ()> handler) override;
  76     void async_check_files(lt::storage_index_t storage, const lt::add_torrent_params *resume_data
  77                            , lt::aux::vector<std::string, lt::file_index_t> links
  78                            , std::function<void (lt::status_t, const lt::storage_error &)> handler) override;
  79     void async_stop_torrent(lt::storage_index_t storage, std::function<void ()> handler) override;
  80     void async_rename_file(lt::storage_index_t storage, lt::file_index_t index, std::string name
  81                            , std::function<void (const std::string &, lt::file_index_t, const lt::storage_error &)> handler) override;
  82     void async_delete_files(lt::storage_index_t storage, lt::remove_flags_t options, std::function<void (const lt::storage_error &)> handler) override;
  83     void async_set_file_priority(lt::storage_index_t storage, lt::aux::vector<lt::download_priority_t, lt::file_index_t> priorities
  84                                  , std::function<void (const lt::storage_error &, lt::aux::vector<lt::download_priority_t, lt::file_index_t>)> handler) override;
  85     void async_clear_piece(lt::storage_index_t storage, lt::piece_index_t index, std::function<void (lt::piece_index_t)> handler) override;
  86     void update_stats_counters(lt::counters &counters) const override;
  87     std::vector<lt::open_file_state> get_status(lt::storage_index_t index) const override;
  88     void abort(bool wait) override;
  89     void submit_jobs() override;
  90     void settings_updated() override;
  91
  92 private:
  93     void handleCompleteFiles(libtorrent::storage_index_t storage, const Path &savePath);
  94
  95     std::unique_ptr<lt::disk_interface> m_nativeDiskIO;
  96
  97     struct StorageData
  98     {
  99         Path savePath;
 100         lt::file_storage files;
 101         lt::aux::vector<lt::download_priority_t, lt::file_index_t> filePriorities;
 102     };
 103     QHash<lt::storage_index_t, StorageData> m_storageData;
 104 };
 105
 106 #else
 107
 108 lt::storage_interface *customStorageConstructor(const lt::storage_params &params, lt::file_pool &pool);
 109
 110 class CustomStorage final : public lt::default_storage
 111 {
 112 public:
 113     explicit CustomStorage(const lt::storage_params &params, lt::file_pool &filePool);
 114
 115     bool verify_resume_data(const lt::add_torrent_params &rd, const lt::aux::vector<std::string, lt::file_index_t> &links, lt::storage_error &ec) override;
 116     void set_file_priority(lt::aux::vector<lt::download_priority_t, lt::file_index_t> &priorities, lt::storage_error &ec) override;
 117     lt::status_t move_storage(const std::string &savePath, lt::move_flags_t flags, lt::storage_error &ec) override;
 118
 119 private:
 120     void handleCompleteFiles(const Path &savePath);
 121
 122     lt::aux::vector<lt::download_priority_t, lt::file_index_t> m_filePriorities;
 123     Path m_savePath;
 124 };
 125 #endif