406 lines
11 KiB
C++
406 lines
11 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop version of Telegram messaging app, see https://telegram.org
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Telegram Desktop is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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It 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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In addition, as a special exception, the copyright holders give permission
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to link the code of portions of this program with the OpenSSL library.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
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*/
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#pragma once
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#include "base/observer.h"
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#include "storage/localimageloader.h" // for TaskId
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namespace Storage {
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constexpr auto kMaxFileInMemory = 10 * 1024 * 1024; // 10 MB max file could be hold in memory
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constexpr auto kMaxVoiceInMemory = 2 * 1024 * 1024; // 2 MB audio is hold in memory and auto loaded
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constexpr auto kMaxStickerInMemory = 2 * 1024 * 1024; // 2 MB stickers hold in memory, auto loaded and displayed inline
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constexpr auto kMaxAnimationInMemory = kMaxFileInMemory; // 10 MB gif and mp4 animations held in memory while playing
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class Downloader final {
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public:
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Downloader();
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int currentPriority() const {
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return _priority;
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}
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void clearPriorities();
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void delayedDestroyLoader(std::unique_ptr<FileLoader> loader);
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base::Observable<void> &taskFinished() {
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return _taskFinishedObservable;
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}
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void requestedAmountIncrement(MTP::DcId dcId, int index, int amount);
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int chooseDcIndexForRequest(MTP::DcId dcId) const;
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~Downloader();
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private:
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base::Observable<void> _taskFinishedObservable;
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int _priority = 1;
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SingleQueuedInvokation _delayedLoadersDestroyer;
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std::vector<std::unique_ptr<FileLoader>> _delayedDestroyedLoaders;
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using RequestedInDc = std::array<int64, MTP::kDownloadSessionsCount>;
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std::map<MTP::DcId, RequestedInDc> _requestedBytesAmount;
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};
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} // namespace Storage
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struct StorageImageSaved {
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StorageImageSaved() = default;
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explicit StorageImageSaved(const QByteArray &data) : data(data) {
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}
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QByteArray data;
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};
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enum LocalLoadStatus {
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LocalNotTried,
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LocalNotFound,
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LocalLoading,
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LocalLoaded,
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LocalFailed,
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};
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class mtpFileLoader;
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class webFileLoader;
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struct FileLoaderQueue;
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class FileLoader : public QObject {
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Q_OBJECT
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public:
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FileLoader(const QString &toFile, int32 size, LocationType locationType, LoadToCacheSetting, LoadFromCloudSetting fromCloud, bool autoLoading);
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bool finished() const {
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return _finished;
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}
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bool cancelled() const {
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return _cancelled;
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}
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const QByteArray &bytes() const {
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return _data;
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}
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virtual uint64 objId() const {
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return 0;
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}
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QByteArray imageFormat(const QSize &shrinkBox = QSize()) const;
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QPixmap imagePixmap(const QSize &shrinkBox = QSize()) const;
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QString fileName() const {
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return _filename;
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}
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float64 currentProgress() const;
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virtual int32 currentOffset(bool includeSkipped = false) const = 0;
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int32 fullSize() const;
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bool setFileName(const QString &filename); // set filename for loaders to cache
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void permitLoadFromCloud();
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void pause();
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void start(bool loadFirst = false, bool prior = true);
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void cancel();
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bool loading() const {
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return _inQueue;
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}
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bool paused() const {
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return _paused;
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}
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bool started() const {
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return _inQueue || _paused;
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}
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bool loadingLocal() const {
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return (_localStatus == LocalLoading);
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}
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bool autoLoading() const {
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return _autoLoading;
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}
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virtual void stop() {
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}
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virtual ~FileLoader();
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void localLoaded(const StorageImageSaved &result, const QByteArray &imageFormat = QByteArray(), const QPixmap &imagePixmap = QPixmap());
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signals:
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void progress(FileLoader *loader);
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void failed(FileLoader *loader, bool started);
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protected:
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void readImage(const QSize &shrinkBox) const;
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not_null<Storage::Downloader*> _downloader;
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FileLoader *_prev = nullptr;
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FileLoader *_next = nullptr;
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int _priority = 0;
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FileLoaderQueue *_queue = nullptr;
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bool _paused = false;
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bool _autoLoading = false;
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bool _inQueue = false;
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bool _finished = false;
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bool _cancelled = false;
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mutable LocalLoadStatus _localStatus = LocalNotTried;
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virtual bool tryLoadLocal() = 0;
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virtual void cancelRequests() = 0;
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void startLoading(bool loadFirst, bool prior);
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void removeFromQueue();
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void cancel(bool failed);
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void loadNext();
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virtual bool loadPart() = 0;
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QString _filename;
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QFile _file;
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bool _fileIsOpen = false;
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LoadToCacheSetting _toCache;
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LoadFromCloudSetting _fromCloud;
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QByteArray _data;
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int32 _size;
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LocationType _locationType;
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TaskId _localTaskId = 0;
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mutable QByteArray _imageFormat;
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mutable QPixmap _imagePixmap;
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};
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class StorageImageLocation;
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class WebFileImageLocation;
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class mtpFileLoader : public FileLoader, public RPCSender {
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Q_OBJECT
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public:
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mtpFileLoader(const StorageImageLocation *location, int32 size, LoadFromCloudSetting fromCloud, bool autoLoading);
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mtpFileLoader(int32 dc, uint64 id, uint64 accessHash, int32 version, LocationType type, const QString &toFile, int32 size, LoadToCacheSetting toCache, LoadFromCloudSetting fromCloud, bool autoLoading);
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mtpFileLoader(const WebFileImageLocation *location, int32 size, LoadFromCloudSetting fromCloud, bool autoLoading);
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int32 currentOffset(bool includeSkipped = false) const override;
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uint64 objId() const override {
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return _id;
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}
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void stop() override {
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rpcInvalidate();
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}
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~mtpFileLoader();
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private:
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struct RequestData {
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MTP::DcId dcId = 0;
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int dcIndex = 0;
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int offset = 0;
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};
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struct CdnFileHash {
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CdnFileHash(int limit, QByteArray hash) : limit(limit), hash(hash) {
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}
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int limit = 0;
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QByteArray hash;
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};
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bool tryLoadLocal() override;
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void cancelRequests() override;
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int partSize() const;
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RequestData prepareRequest(int offset) const;
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void makeRequest(int offset);
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bool loadPart() override;
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void normalPartLoaded(const MTPupload_File &result, mtpRequestId requestId);
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void webPartLoaded(const MTPupload_WebFile &result, mtpRequestId requestId);
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void cdnPartLoaded(const MTPupload_CdnFile &result, mtpRequestId requestId);
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void reuploadDone(const MTPVector<MTPCdnFileHash> &result, mtpRequestId requestId);
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void requestMoreCdnFileHashes();
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void getCdnFileHashesDone(const MTPVector<MTPCdnFileHash> &result, mtpRequestId requestId);
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void partLoaded(int offset, base::const_byte_span bytes);
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bool partFailed(const RPCError &error);
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bool cdnPartFailed(const RPCError &error, mtpRequestId requestId);
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void placeSentRequest(mtpRequestId requestId, const RequestData &requestData);
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int finishSentRequestGetOffset(mtpRequestId requestId);
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void switchToCDN(int offset, const MTPDupload_fileCdnRedirect &redirect);
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void addCdnHashes(const QVector<MTPCdnFileHash> &hashes);
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void changeCDNParams(int offset, MTP::DcId dcId, const QByteArray &token, const QByteArray &encryptionKey, const QByteArray &encryptionIV, const QVector<MTPCdnFileHash> &hashes);
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enum class CheckCdnHashResult {
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NoHash,
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Invalid,
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Good,
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};
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CheckCdnHashResult checkCdnFileHash(int offset, base::const_byte_span bytes);
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std::map<mtpRequestId, RequestData> _sentRequests;
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bool _lastComplete = false;
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int32 _skippedBytes = 0;
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int32 _nextRequestOffset = 0;
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MTP::DcId _dcId = 0; // for photo locations
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const StorageImageLocation *_location = nullptr;
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uint64 _id = 0; // for document locations
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uint64 _accessHash = 0;
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int32 _version = 0;
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const WebFileImageLocation *_urlLocation = nullptr; // for webdocument locations
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MTP::DcId _cdnDcId = 0;
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QByteArray _cdnToken;
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QByteArray _cdnEncryptionKey;
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QByteArray _cdnEncryptionIV;
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std::map<int, CdnFileHash> _cdnFileHashes;
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std::map<int, QByteArray> _cdnUncheckedParts;
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mtpRequestId _cdnHashesRequestId = 0;
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};
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class webFileLoaderPrivate;
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class webFileLoader : public FileLoader {
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Q_OBJECT
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public:
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webFileLoader(const QString &url, const QString &to, LoadFromCloudSetting fromCloud, bool autoLoading);
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virtual int32 currentOffset(bool includeSkipped = false) const;
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virtual webFileLoader *webLoader() {
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return this;
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}
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virtual const webFileLoader *webLoader() const {
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return this;
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}
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void onProgress(qint64 already, qint64 size);
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void onFinished(const QByteArray &data);
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void onError();
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virtual void stop() {
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cancelRequests();
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}
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~webFileLoader();
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protected:
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virtual void cancelRequests();
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virtual bool tryLoadLocal();
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virtual bool loadPart();
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QString _url;
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bool _requestSent;
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int32 _already;
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friend class WebLoadManager;
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webFileLoaderPrivate *_private;
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};
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enum WebReplyProcessResult {
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WebReplyProcessError,
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WebReplyProcessProgress,
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WebReplyProcessFinished,
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};
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class WebLoadManager : public QObject {
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Q_OBJECT
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public:
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WebLoadManager(QThread *thread);
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#ifndef TDESKTOP_DISABLE_NETWORK_PROXY
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void setProxySettings(const QNetworkProxy &proxy);
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#endif // !TDESKTOP_DISABLE_NETWORK_PROXY
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void append(webFileLoader *loader, const QString &url);
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void stop(webFileLoader *reader);
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bool carries(webFileLoader *reader) const;
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~WebLoadManager();
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signals:
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void processDelayed();
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void proxyApplyDelayed();
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void progress(webFileLoader *loader, qint64 already, qint64 size);
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void finished(webFileLoader *loader, QByteArray data);
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void error(webFileLoader *loader);
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public slots:
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void onFailed(QNetworkReply *reply);
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void onFailed(QNetworkReply::NetworkError error);
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void onProgress(qint64 already, qint64 size);
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void onMeta();
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void process();
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void proxyApply();
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void finish();
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private:
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void clear();
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void sendRequest(webFileLoaderPrivate *loader, const QString &redirect = QString());
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bool handleReplyResult(webFileLoaderPrivate *loader, WebReplyProcessResult result);
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#ifndef TDESKTOP_DISABLE_NETWORK_PROXY
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QNetworkProxy _proxySettings;
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#endif // !TDESKTOP_DISABLE_NETWORK_PROXY
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QNetworkAccessManager _manager;
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typedef QMap<webFileLoader*, webFileLoaderPrivate*> LoaderPointers;
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LoaderPointers _loaderPointers;
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mutable QMutex _loaderPointersMutex;
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typedef OrderedSet<webFileLoaderPrivate*> Loaders;
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Loaders _loaders;
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typedef QMap<QNetworkReply*, webFileLoaderPrivate*> Replies;
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Replies _replies;
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};
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class WebLoadMainManager : public QObject {
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Q_OBJECT
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public:
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public slots:
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void progress(webFileLoader *loader, qint64 already, qint64 size);
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void finished(webFileLoader *loader, QByteArray data);
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void error(webFileLoader *loader);
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};
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static FileLoader * const CancelledFileLoader = SharedMemoryLocation<FileLoader, 0>();
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static mtpFileLoader * const CancelledMtpFileLoader = static_cast<mtpFileLoader*>(CancelledFileLoader);
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static webFileLoader * const CancelledWebFileLoader = static_cast<webFileLoader*>(CancelledFileLoader);
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static WebLoadManager * const FinishedWebLoadManager = SharedMemoryLocation<WebLoadManager, 0>();
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void reinitWebLoadManager();
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void stopWebLoadManager();
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