src/base/bittorrent/session.h

   1 /*
   2  * Bittorrent Client using Qt and libtorrent.
   3  * Copyright (C) 2015-2024  Vladimir Golovnev <glassez@yandex.ru>
   4  * Copyright (C) 2006  Christophe Dumez <chris@qbittorrent.org>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  19  *
  20  * In addition, as a special exception, the copyright holders give permission to
  21  * link this program with the OpenSSL project's "OpenSSL" library (or with
  22  * modified versions of it that use the same license as the "OpenSSL" library),
  23  * and distribute the linked executables. You must obey the GNU General Public
  24  * License in all respects for all of the code used other than "OpenSSL".  If you
  25  * modify file(s), you may extend this exception to your version of the file(s),
  26  * but you are not obligated to do so. If you do not wish to do so, delete this
  27  * exception statement from your version.
  28  */
  29
  30 #pragma once
  31
  32 #include <QtContainerFwd>
  33 #include <QObject>
  34
  35 #include "base/pathfwd.h"
  36 #include "base/tagset.h"
  37 #include "addtorrentparams.h"
  38 #include "categoryoptions.h"
  39 #include "sharelimitaction.h"
  40 #include "torrentcontentremoveoption.h"
  41 #include "trackerentry.h"
  42 #include "trackerentrystatus.h"
  43
  44 class QString;
  45
  46 namespace BitTorrent
  47 {
  48     class InfoHash;
  49     class Torrent;
  50     class TorrentDescriptor;
  51     class TorrentID;
  52     class TorrentInfo;
  53     struct CacheStatus;
  54     struct SessionStatus;
  55
  56     enum class TorrentRemoveOption
  57     {
  58         KeepContent,
  59         RemoveContent
  60     };
  61
  62     // Using `Q_ENUM_NS()` without a wrapper namespace in our case is not advised
  63     // since `Q_NAMESPACE` cannot be used when the same namespace resides at different files.
  64     // https://www.kdab.com/new-qt-5-8-meta-object-support-namespaces/#comment-143779
  65     inline namespace SessionSettingsEnums
  66     {
  67         Q_NAMESPACE
  68
  69         enum class BTProtocol : int
  70         {
  71             Both = 0,
  72             TCP = 1,
  73             UTP = 2
  74         };
  75         Q_ENUM_NS(BTProtocol)
  76
  77         enum class ChokingAlgorithm : int
  78         {
  79             FixedSlots = 0,
  80             RateBased = 1
  81         };
  82         Q_ENUM_NS(ChokingAlgorithm)
  83
  84         enum class DiskIOReadMode : int
  85         {
  86             DisableOSCache = 0,
  87             EnableOSCache = 1
  88         };
  89         Q_ENUM_NS(DiskIOReadMode)
  90
  91         enum class DiskIOType : int
  92         {
  93             Default = 0,
  94             MMap = 1,
  95             Posix = 2
  96         };
  97         Q_ENUM_NS(DiskIOType)
  98
  99         enum class DiskIOWriteMode : int
 100         {
 101             DisableOSCache = 0,
 102             EnableOSCache = 1,
 103 #ifdef QBT_USES_LIBTORRENT2
 104             WriteThrough = 2
 105 #endif
 106         };
 107         Q_ENUM_NS(DiskIOWriteMode)
 108
 109         enum class MixedModeAlgorithm : int
 110         {
 111             TCP = 0,
 112             Proportional = 1
 113         };
 114         Q_ENUM_NS(MixedModeAlgorithm)
 115
 116         enum class SeedChokingAlgorithm : int
 117         {
 118             RoundRobin = 0,
 119             FastestUpload = 1,
 120             AntiLeech = 2
 121         };
 122         Q_ENUM_NS(SeedChokingAlgorithm)
 123
 124         enum class ResumeDataStorageType
 125         {
 126             Legacy,
 127             SQLite
 128         };
 129         Q_ENUM_NS(ResumeDataStorageType)
 130     }
 131
 132     class Session : public QObject
 133     {
 134         Q_OBJECT
 135         Q_DISABLE_COPY_MOVE(Session)
 136
 137     public:
 138         static void initInstance();
 139         static void freeInstance();
 140         static Session *instance();
 141
 142         using QObject::QObject;
 143
 144         virtual Path savePath() const = 0;
 145         virtual void setSavePath(const Path &path) = 0;
 146         virtual Path downloadPath() const = 0;
 147         virtual void setDownloadPath(const Path &path) = 0;
 148         virtual bool isDownloadPathEnabled() const = 0;
 149         virtual void setDownloadPathEnabled(bool enabled) = 0;
 150
 151         static bool isValidCategoryName(const QString &name);
 152         static QString subcategoryName(const QString &category);
 153         static QString parentCategoryName(const QString &category);
 154         // returns category itself and all top level categories
 155         static QStringList expandCategory(const QString &category);
 156
 157         virtual QStringList categories() const = 0;
 158         virtual CategoryOptions categoryOptions(const QString &categoryName) const = 0;
 159         virtual Path categorySavePath(const QString &categoryName) const = 0;
 160         virtual Path categorySavePath(const QString &categoryName, const CategoryOptions &options) const = 0;
 161         virtual Path categoryDownloadPath(const QString &categoryName) const = 0;
 162         virtual Path categoryDownloadPath(const QString &categoryName, const CategoryOptions &options) const = 0;
 163         virtual bool addCategory(const QString &name, const CategoryOptions &options = {}) = 0;
 164         virtual bool editCategory(const QString &name, const CategoryOptions &options) = 0;
 165         virtual bool removeCategory(const QString &name) = 0;
 166         virtual bool isSubcategoriesEnabled() const = 0;
 167         virtual void setSubcategoriesEnabled(bool value) = 0;
 168         virtual bool useCategoryPathsInManualMode() const = 0;
 169         virtual void setUseCategoryPathsInManualMode(bool value) = 0;
 170
 171         virtual Path suggestedSavePath(const QString &categoryName, std::optional<bool> useAutoTMM) const = 0;
 172         virtual Path suggestedDownloadPath(const QString &categoryName, std::optional<bool> useAutoTMM) const = 0;
 173
 174         virtual TagSet tags() const = 0;
 175         virtual bool hasTag(const Tag &tag) const = 0;
 176         virtual bool addTag(const Tag &tag) = 0;
 177         virtual bool removeTag(const Tag &tag) = 0;
 178
 179         // Torrent Management Mode subsystem (TMM)
 180         //
 181         // Each torrent can be either in Manual mode or in Automatic mode
 182         // In Manual Mode various torrent properties are set explicitly(eg save path)
 183         // In Automatic Mode various torrent properties are set implicitly(eg save path)
 184         //     based on the associated category.
 185         // In Automatic Mode torrent save path can be changed in following cases:
 186         //     1. Default save path changed
 187         //     2. Torrent category save path changed
 188         //     3. Torrent category changed
 189         //     (unless otherwise is specified)
 190         virtual bool isAutoTMMDisabledByDefault() const = 0;
 191         virtual void setAutoTMMDisabledByDefault(bool value) = 0;
 192         virtual bool isDisableAutoTMMWhenCategoryChanged() const = 0;
 193         virtual void setDisableAutoTMMWhenCategoryChanged(bool value) = 0;
 194         virtual bool isDisableAutoTMMWhenDefaultSavePathChanged() const = 0;
 195         virtual void setDisableAutoTMMWhenDefaultSavePathChanged(bool value) = 0;
 196         virtual bool isDisableAutoTMMWhenCategorySavePathChanged() const = 0;
 197         virtual void setDisableAutoTMMWhenCategorySavePathChanged(bool value) = 0;
 198
 199         virtual qreal globalMaxRatio() const = 0;
 200         virtual void setGlobalMaxRatio(qreal ratio) = 0;
 201         virtual int globalMaxSeedingMinutes() const = 0;
 202         virtual void setGlobalMaxSeedingMinutes(int minutes) = 0;
 203         virtual int globalMaxInactiveSeedingMinutes() const = 0;
 204         virtual void setGlobalMaxInactiveSeedingMinutes(int minutes) = 0;
 205         virtual ShareLimitAction shareLimitAction() const = 0;
 206         virtual void setShareLimitAction(ShareLimitAction act) = 0;
 207
 208         virtual QString getDHTBootstrapNodes() const = 0;
 209         virtual void setDHTBootstrapNodes(const QString &nodes) = 0;
 210         virtual bool isDHTEnabled() const = 0;
 211         virtual void setDHTEnabled(bool enabled) = 0;
 212         virtual bool isLSDEnabled() const = 0;
 213         virtual void setLSDEnabled(bool enabled) = 0;
 214         virtual bool isPeXEnabled() const = 0;
 215         virtual void setPeXEnabled(bool enabled) = 0;
 216         virtual bool isAddTorrentToQueueTop() const = 0;
 217         virtual void setAddTorrentToQueueTop(bool value) = 0;
 218         virtual bool isAddTorrentStopped() const = 0;
 219         virtual void setAddTorrentStopped(bool value) = 0;
 220         virtual Torrent::StopCondition torrentStopCondition() const = 0;
 221         virtual void setTorrentStopCondition(Torrent::StopCondition stopCondition) = 0;
 222         virtual TorrentContentLayout torrentContentLayout() const = 0;
 223         virtual void setTorrentContentLayout(TorrentContentLayout value) = 0;
 224         virtual bool isTrackerEnabled() const = 0;
 225         virtual void setTrackerEnabled(bool enabled) = 0;
 226         virtual bool isAppendExtensionEnabled() const = 0;
 227         virtual void setAppendExtensionEnabled(bool enabled) = 0;
 228         virtual bool isUnwantedFolderEnabled() const = 0;
 229         virtual void setUnwantedFolderEnabled(bool enabled) = 0;
 230         virtual int refreshInterval() const = 0;
 231         virtual void setRefreshInterval(int value) = 0;
 232         virtual bool isPreallocationEnabled() const = 0;
 233         virtual void setPreallocationEnabled(bool enabled) = 0;
 234         virtual Path torrentExportDirectory() const = 0;
 235         virtual void setTorrentExportDirectory(const Path &path) = 0;
 236         virtual Path finishedTorrentExportDirectory() const = 0;
 237         virtual void setFinishedTorrentExportDirectory(const Path &path) = 0;
 238
 239         virtual int globalDownloadSpeedLimit() const = 0;
 240         virtual void setGlobalDownloadSpeedLimit(int limit) = 0;
 241         virtual int globalUploadSpeedLimit() const = 0;
 242         virtual void setGlobalUploadSpeedLimit(int limit) = 0;
 243         virtual int altGlobalDownloadSpeedLimit() const = 0;
 244         virtual void setAltGlobalDownloadSpeedLimit(int limit) = 0;
 245         virtual int altGlobalUploadSpeedLimit() const = 0;
 246         virtual void setAltGlobalUploadSpeedLimit(int limit) = 0;
 247         virtual int downloadSpeedLimit() const = 0;
 248         virtual void setDownloadSpeedLimit(int limit) = 0;
 249         virtual int uploadSpeedLimit() const = 0;
 250         virtual void setUploadSpeedLimit(int limit) = 0;
 251         virtual bool isAltGlobalSpeedLimitEnabled() const = 0;
 252         virtual void setAltGlobalSpeedLimitEnabled(bool enabled) = 0;
 253         virtual bool isBandwidthSchedulerEnabled() const = 0;
 254         virtual void setBandwidthSchedulerEnabled(bool enabled) = 0;
 255
 256         virtual bool isPerformanceWarningEnabled() const = 0;
 257         virtual void setPerformanceWarningEnabled(bool enable) = 0;
 258         virtual int saveResumeDataInterval() const = 0;
 259         virtual void setSaveResumeDataInterval(int value) = 0;
 260         virtual int shutdownTimeout() const = 0;
 261         virtual void setShutdownTimeout(int value) = 0;
 262         virtual int port() const = 0;
 263         virtual void setPort(int port) = 0;
 264         virtual bool isSSLEnabled() const = 0;
 265         virtual void setSSLEnabled(bool enabled) = 0;
 266         virtual int sslPort() const = 0;
 267         virtual void setSSLPort(int port) = 0;
 268         virtual QString networkInterface() const = 0;
 269         virtual void setNetworkInterface(const QString &iface) = 0;
 270         virtual QString networkInterfaceName() const = 0;
 271         virtual void setNetworkInterfaceName(const QString &name) = 0;
 272         virtual QString networkInterfaceAddress() const = 0;
 273         virtual void setNetworkInterfaceAddress(const QString &address) = 0;
 274         virtual int encryption() const = 0;
 275         virtual void setEncryption(int state) = 0;
 276         virtual int maxActiveCheckingTorrents() const = 0;
 277         virtual void setMaxActiveCheckingTorrents(int val) = 0;
 278         virtual bool isI2PEnabled() const = 0;
 279         virtual void setI2PEnabled(bool enabled) = 0;
 280         virtual QString I2PAddress() const = 0;
 281         virtual void setI2PAddress(const QString &address) = 0;
 282         virtual int I2PPort() const = 0;
 283         virtual void setI2PPort(int port) = 0;
 284         virtual bool I2PMixedMode() const = 0;
 285         virtual void setI2PMixedMode(bool enabled) = 0;
 286         virtual int I2PInboundQuantity() const = 0;
 287         virtual void setI2PInboundQuantity(int value) = 0;
 288         virtual int I2POutboundQuantity() const = 0;
 289         virtual void setI2POutboundQuantity(int value) = 0;
 290         virtual int I2PInboundLength() const = 0;
 291         virtual void setI2PInboundLength(int value) = 0;
 292         virtual int I2POutboundLength() const = 0;
 293         virtual void setI2POutboundLength(int value) = 0;
 294         virtual bool isProxyPeerConnectionsEnabled() const = 0;
 295         virtual void setProxyPeerConnectionsEnabled(bool enabled) = 0;
 296         virtual ChokingAlgorithm chokingAlgorithm() const = 0;
 297         virtual void setChokingAlgorithm(ChokingAlgorithm mode) = 0;
 298         virtual SeedChokingAlgorithm seedChokingAlgorithm() const = 0;
 299         virtual void setSeedChokingAlgorithm(SeedChokingAlgorithm mode) = 0;
 300         virtual bool isAddTrackersEnabled() const = 0;
 301         virtual void setAddTrackersEnabled(bool enabled) = 0;
 302         virtual QString additionalTrackers() const = 0;
 303         virtual void setAdditionalTrackers(const QString &trackers) = 0;
 304         virtual bool isIPFilteringEnabled() const = 0;
 305         virtual void setIPFilteringEnabled(bool enabled) = 0;
 306         virtual Path IPFilterFile() const = 0;
 307         virtual void setIPFilterFile(const Path &path) = 0;
 308         virtual bool announceToAllTrackers() const = 0;
 309         virtual void setAnnounceToAllTrackers(bool val) = 0;
 310         virtual bool announceToAllTiers() const = 0;
 311         virtual void setAnnounceToAllTiers(bool val) = 0;
 312         virtual int peerTurnover() const = 0;
 313         virtual void setPeerTurnover(int val) = 0;
 314         virtual int peerTurnoverCutoff() const = 0;
 315         virtual void setPeerTurnoverCutoff(int val) = 0;
 316         virtual int peerTurnoverInterval() const = 0;
 317         virtual void setPeerTurnoverInterval(int val) = 0;
 318         virtual int requestQueueSize() const = 0;
 319         virtual void setRequestQueueSize(int val) = 0;
 320         virtual int asyncIOThreads() const = 0;
 321         virtual void setAsyncIOThreads(int num) = 0;
 322         virtual int hashingThreads() const = 0;
 323         virtual void setHashingThreads(int num) = 0;
 324         virtual int filePoolSize() const = 0;
 325         virtual void setFilePoolSize(int size) = 0;
 326         virtual int checkingMemUsage() const = 0;
 327         virtual void setCheckingMemUsage(int size) = 0;
 328         virtual int diskCacheSize() const = 0;
 329         virtual void setDiskCacheSize(int size) = 0;
 330         virtual int diskCacheTTL() const = 0;
 331         virtual void setDiskCacheTTL(int ttl) = 0;
 332         virtual qint64 diskQueueSize() const = 0;
 333         virtual void setDiskQueueSize(qint64 size) = 0;
 334         virtual DiskIOType diskIOType() const = 0;
 335         virtual void setDiskIOType(DiskIOType type) = 0;
 336         virtual DiskIOReadMode diskIOReadMode() const = 0;
 337         virtual void setDiskIOReadMode(DiskIOReadMode mode) = 0;
 338         virtual DiskIOWriteMode diskIOWriteMode() const = 0;
 339         virtual void setDiskIOWriteMode(DiskIOWriteMode mode) = 0;
 340         virtual bool isCoalesceReadWriteEnabled() const = 0;
 341         virtual void setCoalesceReadWriteEnabled(bool enabled) = 0;
 342         virtual bool usePieceExtentAffinity() const = 0;
 343         virtual void setPieceExtentAffinity(bool enabled) = 0;
 344         virtual bool isSuggestModeEnabled() const = 0;
 345         virtual void setSuggestMode(bool mode) = 0;
 346         virtual int sendBufferWatermark() const = 0;
 347         virtual void setSendBufferWatermark(int value) = 0;
 348         virtual int sendBufferLowWatermark() const = 0;
 349         virtual void setSendBufferLowWatermark(int value) = 0;
 350         virtual int sendBufferWatermarkFactor() const = 0;
 351         virtual void setSendBufferWatermarkFactor(int value) = 0;
 352         virtual int connectionSpeed() const = 0;
 353         virtual void setConnectionSpeed(int value) = 0;
 354         virtual int socketSendBufferSize() const = 0;
 355         virtual void setSocketSendBufferSize(int value) = 0;
 356         virtual int socketReceiveBufferSize() const = 0;
 357         virtual void setSocketReceiveBufferSize(int value) = 0;
 358         virtual int socketBacklogSize() const = 0;
 359         virtual void setSocketBacklogSize(int value) = 0;
 360         virtual bool isAnonymousModeEnabled() const = 0;
 361         virtual void setAnonymousModeEnabled(bool enabled) = 0;
 362         virtual bool isQueueingSystemEnabled() const = 0;
 363         virtual void setQueueingSystemEnabled(bool enabled) = 0;
 364         virtual bool ignoreSlowTorrentsForQueueing() const = 0;
 365         virtual void setIgnoreSlowTorrentsForQueueing(bool ignore) = 0;
 366         virtual int downloadRateForSlowTorrents() const = 0;
 367         virtual void setDownloadRateForSlowTorrents(int rateInKibiBytes) = 0;
 368         virtual int uploadRateForSlowTorrents() const = 0;
 369         virtual void setUploadRateForSlowTorrents(int rateInKibiBytes) = 0;
 370         virtual int slowTorrentsInactivityTimer() const = 0;
 371         virtual void setSlowTorrentsInactivityTimer(int timeInSeconds) = 0;
 372         virtual int outgoingPortsMin() const = 0;
 373         virtual void setOutgoingPortsMin(int min) = 0;
 374         virtual int outgoingPortsMax() const = 0;
 375         virtual void setOutgoingPortsMax(int max) = 0;
 376         virtual int UPnPLeaseDuration() const = 0;
 377         virtual void setUPnPLeaseDuration(int duration) = 0;
 378         virtual int peerToS() const = 0;
 379         virtual void setPeerToS(int value) = 0;
 380         virtual bool ignoreLimitsOnLAN() const = 0;
 381         virtual void setIgnoreLimitsOnLAN(bool ignore) = 0;
 382         virtual bool includeOverheadInLimits() const = 0;
 383         virtual void setIncludeOverheadInLimits(bool include) = 0;
 384         virtual QString announceIP() const = 0;
 385         virtual void setAnnounceIP(const QString &ip) = 0;
 386         virtual int maxConcurrentHTTPAnnounces() const = 0;
 387         virtual void setMaxConcurrentHTTPAnnounces(int value) = 0;
 388         virtual bool isReannounceWhenAddressChangedEnabled() const = 0;
 389         virtual void setReannounceWhenAddressChangedEnabled(bool enabled) = 0;
 390         virtual void reannounceToAllTrackers() const = 0;
 391         virtual int stopTrackerTimeout() const = 0;
 392         virtual void setStopTrackerTimeout(int value) = 0;
 393         virtual int maxConnections() const = 0;
 394         virtual void setMaxConnections(int max) = 0;
 395         virtual int maxConnectionsPerTorrent() const = 0;
 396         virtual void setMaxConnectionsPerTorrent(int max) = 0;
 397         virtual int maxUploads() const = 0;
 398         virtual void setMaxUploads(int max) = 0;
 399         virtual int maxUploadsPerTorrent() const = 0;
 400         virtual void setMaxUploadsPerTorrent(int max) = 0;
 401         virtual int maxActiveDownloads() const = 0;
 402         virtual void setMaxActiveDownloads(int max) = 0;
 403         virtual int maxActiveUploads() const = 0;
 404         virtual void setMaxActiveUploads(int max) = 0;
 405         virtual int maxActiveTorrents() const = 0;
 406         virtual void setMaxActiveTorrents(int max) = 0;
 407         virtual BTProtocol btProtocol() const = 0;
 408         virtual void setBTProtocol(BTProtocol protocol) = 0;
 409         virtual bool isUTPRateLimited() const = 0;
 410         virtual void setUTPRateLimited(bool limited) = 0;
 411         virtual MixedModeAlgorithm utpMixedMode() const = 0;
 412         virtual void setUtpMixedMode(MixedModeAlgorithm mode) = 0;
 413         virtual bool isIDNSupportEnabled() const = 0;
 414         virtual void setIDNSupportEnabled(bool enabled) = 0;
 415         virtual bool multiConnectionsPerIpEnabled() const = 0;
 416         virtual void setMultiConnectionsPerIpEnabled(bool enabled) = 0;
 417         virtual bool validateHTTPSTrackerCertificate() const = 0;
 418         virtual void setValidateHTTPSTrackerCertificate(bool enabled) = 0;
 419         virtual bool isSSRFMitigationEnabled() const = 0;
 420         virtual void setSSRFMitigationEnabled(bool enabled) = 0;
 421         virtual bool blockPeersOnPrivilegedPorts() const = 0;
 422         virtual void setBlockPeersOnPrivilegedPorts(bool enabled) = 0;
 423         virtual bool isTrackerFilteringEnabled() const = 0;
 424         virtual void setTrackerFilteringEnabled(bool enabled) = 0;
 425         virtual bool isExcludedFileNamesEnabled() const = 0;
 426         virtual void setExcludedFileNamesEnabled(bool enabled) = 0;
 427         virtual QStringList excludedFileNames() const = 0;
 428         virtual void setExcludedFileNames(const QStringList &newList) = 0;
 429         virtual void applyFilenameFilter(const PathList &files, QList<BitTorrent::DownloadPriority> &priorities) = 0;
 430         virtual QStringList bannedIPs() const = 0;
 431         virtual void setBannedIPs(const QStringList &newList) = 0;
 432         virtual ResumeDataStorageType resumeDataStorageType() const = 0;
 433         virtual void setResumeDataStorageType(ResumeDataStorageType type) = 0;
 434         virtual bool isMergeTrackersEnabled() const = 0;
 435         virtual void setMergeTrackersEnabled(bool enabled) = 0;
 436         virtual bool isStartPaused() const = 0;
 437         virtual void setStartPaused(bool value) = 0;
 438         virtual TorrentContentRemoveOption torrentContentRemoveOption() const = 0;
 439         virtual void setTorrentContentRemoveOption(TorrentContentRemoveOption option) = 0;
 440
 441         virtual bool isRestored() const = 0;
 442
 443         virtual bool isPaused() const = 0;
 444         virtual void pause() = 0;
 445         virtual void resume() = 0;
 446
 447         virtual Torrent *getTorrent(const TorrentID &id) const = 0;
 448         virtual Torrent *findTorrent(const InfoHash &infoHash) const = 0;
 449         virtual QList<Torrent *> torrents() const = 0;
 450         virtual qsizetype torrentsCount() const = 0;
 451         virtual const SessionStatus &status() const = 0;
 452         virtual const CacheStatus &cacheStatus() const = 0;
 453         virtual bool isListening() const = 0;
 454
 455         virtual void banIP(const QString &ip) = 0;
 456
 457         virtual bool isKnownTorrent(const InfoHash &infoHash) const = 0;
 458         virtual bool addTorrent(const TorrentDescriptor &torrentDescr, const AddTorrentParams &params = {}) = 0;
 459         virtual bool removeTorrent(const TorrentID &id, TorrentRemoveOption deleteOption = TorrentRemoveOption::KeepContent) = 0;
 460         virtual bool downloadMetadata(const TorrentDescriptor &torrentDescr) = 0;
 461         virtual bool cancelDownloadMetadata(const TorrentID &id) = 0;
 462
 463         virtual void increaseTorrentsQueuePos(const QList<TorrentID> &ids) = 0;
 464         virtual void decreaseTorrentsQueuePos(const QList<TorrentID> &ids) = 0;
 465         virtual void topTorrentsQueuePos(const QList<TorrentID> &ids) = 0;
 466         virtual void bottomTorrentsQueuePos(const QList<TorrentID> &ids) = 0;
 467
 468     signals:
 469         void startupProgressUpdated(int progress);
 470         void addTorrentFailed(const InfoHash &infoHash, const QString &reason);
 471         void allTorrentsFinished();
 472         void categoryAdded(const QString &categoryName);
 473         void categoryRemoved(const QString &categoryName);
 474         void categoryOptionsChanged(const QString &categoryName);
 475         void fullDiskError(Torrent *torrent, const QString &msg);
 476         void IPFilterParsed(bool error, int ruleCount);
 477         void loadTorrentFailed(const QString &error);
 478         void metadataDownloaded(const TorrentInfo &info);
 479         void restored();
 480         void paused();
 481         void resumed();
 482         void speedLimitModeChanged(bool alternative);
 483         void statsUpdated();
 484         void subcategoriesSupportChanged();
 485         void tagAdded(const Tag &tag);
 486         void tagRemoved(const Tag &tag);
 487         void torrentAboutToBeRemoved(Torrent *torrent);
 488         void torrentAdded(Torrent *torrent);
 489         void torrentCategoryChanged(Torrent *torrent, const QString &oldCategory);
 490         void torrentFinished(Torrent *torrent);
 491         void torrentFinishedChecking(Torrent *torrent);
 492         void torrentMetadataReceived(Torrent *torrent);
 493         void torrentStopped(Torrent *torrent);
 494         void torrentStarted(Torrent *torrent);
 495         void torrentSavePathChanged(Torrent *torrent);
 496         void torrentSavingModeChanged(Torrent *torrent);
 497         void torrentsLoaded(const QList<Torrent *> &torrents);
 498         void torrentsUpdated(const QList<Torrent *> &torrents);
 499         void torrentTagAdded(Torrent *torrent, const Tag &tag);
 500         void torrentTagRemoved(Torrent *torrent, const Tag &tag);
 501         void trackerError(Torrent *torrent, const QString &tracker);
 502         void trackersAdded(Torrent *torrent, const QList<TrackerEntry> &trackers);
 503         void trackersChanged(Torrent *torrent);
 504         void trackersRemoved(Torrent *torrent, const QStringList &trackers);
 505         void trackerSuccess(Torrent *torrent, const QString &tracker);
 506         void trackerWarning(Torrent *torrent, const QString &tracker);
 507         void trackerEntryStatusesUpdated(Torrent *torrent, const QHash<QString, TrackerEntryStatus> &updatedTrackers);
 508     };
 509 }