596 lines
25 KiB
C++
596 lines
25 KiB
C++
/*
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* nheko Copyright (C) 2019 The nheko authors
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* nheko Copyright (C) 2017 Konstantinos Sideris <siderisk@auth.gr>
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*
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* This program 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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*
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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, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <limits>
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#include <optional>
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#include <QDateTime>
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#include <QDir>
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#include <QImage>
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#include <QString>
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#if __has_include(<lmdbxx/lmdb++.h>)
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#include <lmdbxx/lmdb++.h>
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#else
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#include <lmdb++.h>
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#endif
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#include <nlohmann/json.hpp>
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#include <mtx/responses/messages.hpp>
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#include <mtx/responses/notifications.hpp>
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#include <mtx/responses/sync.hpp>
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#include <mtxclient/crypto/client.hpp>
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#include <mtxclient/http/client.hpp>
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#include "CacheCryptoStructs.h"
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#include "CacheStructs.h"
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class Cache : public QObject
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{
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Q_OBJECT
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public:
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Cache(const QString &userId, QObject *parent = nullptr);
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std::string displayName(const std::string &room_id, const std::string &user_id);
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QString displayName(const QString &room_id, const QString &user_id);
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QString avatarUrl(const QString &room_id, const QString &user_id);
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// presence
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mtx::presence::PresenceState presenceState(const std::string &user_id);
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std::string statusMessage(const std::string &user_id);
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// user cache stores user keys
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std::optional<UserKeyCache> userKeys(const std::string &user_id);
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std::map<std::string, std::optional<UserKeyCache>> getMembersWithKeys(
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const std::string &room_id);
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void updateUserKeys(const std::string &sync_token,
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const mtx::responses::QueryKeys &keyQuery);
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void markUserKeysOutOfDate(lmdb::txn &txn,
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lmdb::dbi &db,
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const std::vector<std::string> &user_ids,
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const std::string &sync_token);
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void deleteUserKeys(lmdb::txn &txn,
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lmdb::dbi &db,
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const std::vector<std::string> &user_ids);
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void query_keys(const std::string &user_id,
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std::function<void(const UserKeyCache &, mtx::http::RequestErr)> cb);
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// device & user verification cache
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VerificationStatus verificationStatus(const std::string &user_id);
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void markDeviceVerified(const std::string &user_id, const std::string &device);
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void markDeviceUnverified(const std::string &user_id, const std::string &device);
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std::vector<std::string> joinedRooms();
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QMap<QString, RoomInfo> roomInfo(bool withInvites = true);
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std::optional<mtx::events::state::CanonicalAlias> getRoomAliases(const std::string &roomid);
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std::map<QString, bool> invites();
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//! Calculate & return the name of the room.
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QString getRoomName(lmdb::txn &txn, lmdb::dbi &statesdb, lmdb::dbi &membersdb);
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//! Get room join rules
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mtx::events::state::JoinRule getRoomJoinRule(lmdb::txn &txn, lmdb::dbi &statesdb);
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bool getRoomGuestAccess(lmdb::txn &txn, lmdb::dbi &statesdb);
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//! Retrieve the topic of the room if any.
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QString getRoomTopic(lmdb::txn &txn, lmdb::dbi &statesdb);
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//! Retrieve the room avatar's url if any.
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QString getRoomAvatarUrl(lmdb::txn &txn, lmdb::dbi &statesdb, lmdb::dbi &membersdb);
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//! Retrieve the version of the room if any.
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QString getRoomVersion(lmdb::txn &txn, lmdb::dbi &statesdb);
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//! Retrieve member info from a room.
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std::vector<RoomMember> getMembers(const std::string &room_id,
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std::size_t startIndex = 0,
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std::size_t len = 30);
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void saveState(const mtx::responses::Sync &res);
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bool isInitialized() const;
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std::string nextBatchToken() const;
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void deleteData();
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void removeInvite(lmdb::txn &txn, const std::string &room_id);
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void removeInvite(const std::string &room_id);
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void removeRoom(lmdb::txn &txn, const std::string &roomid);
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void removeRoom(const std::string &roomid);
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void setup();
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cache::CacheVersion formatVersion();
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void setCurrentFormat();
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bool runMigrations();
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std::vector<QString> roomIds();
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QMap<QString, mtx::responses::Notifications> getTimelineMentions();
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//! Retrieve all the user ids from a room.
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std::vector<std::string> roomMembers(const std::string &room_id);
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//! Check if the given user has power leve greater than than
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//! lowest power level of the given events.
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bool hasEnoughPowerLevel(const std::vector<mtx::events::EventType> &eventTypes,
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const std::string &room_id,
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const std::string &user_id);
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//! Retrieves the saved room avatar.
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QImage getRoomAvatar(const QString &id);
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QImage getRoomAvatar(const std::string &id);
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//! Adds a user to the read list for the given event.
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//!
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//! There should be only one user id present in a receipt list per room.
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//! The user id should be removed from any other lists.
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using Receipts = std::map<std::string, std::map<std::string, uint64_t>>;
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void updateReadReceipt(lmdb::txn &txn,
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const std::string &room_id,
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const Receipts &receipts);
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//! Retrieve all the read receipts for the given event id and room.
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//!
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//! Returns a map of user ids and the time of the read receipt in milliseconds.
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using UserReceipts = std::multimap<uint64_t, std::string, std::greater<uint64_t>>;
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UserReceipts readReceipts(const QString &event_id, const QString &room_id);
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QByteArray image(const QString &url) const;
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QByteArray image(lmdb::txn &txn, const std::string &url) const;
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void saveImage(const std::string &url, const std::string &data);
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void saveImage(const QString &url, const QByteArray &data);
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RoomInfo singleRoomInfo(const std::string &room_id);
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std::vector<std::string> roomsWithStateUpdates(const mtx::responses::Sync &res);
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std::vector<std::string> roomsWithTagUpdates(const mtx::responses::Sync &res);
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std::map<QString, RoomInfo> getRoomInfo(const std::vector<std::string> &rooms);
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//! Calculates which the read status of a room.
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//! Whether all the events in the timeline have been read.
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bool calculateRoomReadStatus(const std::string &room_id);
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void calculateRoomReadStatus();
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std::vector<RoomSearchResult> searchRooms(const std::string &query,
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std::uint8_t max_items = 5);
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void markSentNotification(const std::string &event_id);
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//! Removes an event from the sent notifications.
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void removeReadNotification(const std::string &event_id);
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//! Check if we have sent a desktop notification for the given event id.
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bool isNotificationSent(const std::string &event_id);
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//! Add all notifications containing a user mention to the db.
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void saveTimelineMentions(const mtx::responses::Notifications &res);
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//! retrieve events in timeline and related functions
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struct Messages
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{
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mtx::responses::Timeline timeline;
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uint64_t next_index;
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bool end_of_cache = false;
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};
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Messages getTimelineMessages(lmdb::txn &txn,
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const std::string &room_id,
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uint64_t index = std::numeric_limits<uint64_t>::max(),
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bool forward = false);
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std::optional<mtx::events::collections::TimelineEvent> getEvent(
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const std::string &room_id,
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const std::string &event_id);
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void storeEvent(const std::string &room_id,
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const std::string &event_id,
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const mtx::events::collections::TimelineEvent &event);
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std::vector<std::string> relatedEvents(const std::string &room_id,
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const std::string &event_id);
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struct TimelineRange
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{
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uint64_t first, last;
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};
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std::optional<TimelineRange> getTimelineRange(const std::string &room_id);
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std::optional<uint64_t> getTimelineIndex(const std::string &room_id,
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std::string_view event_id);
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std::optional<std::string> getTimelineEventId(const std::string &room_id, uint64_t index);
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std::string previousBatchToken(const std::string &room_id);
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uint64_t saveOldMessages(const std::string &room_id, const mtx::responses::Messages &res);
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void savePendingMessage(const std::string &room_id,
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const mtx::events::collections::TimelineEvent &message);
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std::optional<mtx::events::collections::TimelineEvent> firstPendingMessage(
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const std::string &room_id);
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void removePendingStatus(const std::string &room_id, const std::string &txn_id);
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//! clear timeline keeping only the latest batch
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void clearTimeline(const std::string &room_id);
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//! Remove old unused data.
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void deleteOldMessages();
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void deleteOldData() noexcept;
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//! Retrieve all saved room ids.
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std::vector<std::string> getRoomIds(lmdb::txn &txn);
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//! Mark a room that uses e2e encryption.
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void setEncryptedRoom(lmdb::txn &txn, const std::string &room_id);
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bool isRoomEncrypted(const std::string &room_id);
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//! Check if a user is a member of the room.
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bool isRoomMember(const std::string &user_id, const std::string &room_id);
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//
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// Outbound Megolm Sessions
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//
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void saveOutboundMegolmSession(const std::string &room_id,
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const OutboundGroupSessionData &data,
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mtx::crypto::OutboundGroupSessionPtr &session);
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OutboundGroupSessionDataRef getOutboundMegolmSession(const std::string &room_id);
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bool outboundMegolmSessionExists(const std::string &room_id) noexcept;
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void updateOutboundMegolmSession(const std::string &room_id,
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const OutboundGroupSessionData &data,
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mtx::crypto::OutboundGroupSessionPtr &session);
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void dropOutboundMegolmSession(const std::string &room_id);
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void importSessionKeys(const mtx::crypto::ExportedSessionKeys &keys);
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mtx::crypto::ExportedSessionKeys exportSessionKeys();
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//
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// Inbound Megolm Sessions
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//
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void saveInboundMegolmSession(const MegolmSessionIndex &index,
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mtx::crypto::InboundGroupSessionPtr session);
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mtx::crypto::InboundGroupSessionPtr getInboundMegolmSession(
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const MegolmSessionIndex &index);
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bool inboundMegolmSessionExists(const MegolmSessionIndex &index);
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//
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// Olm Sessions
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//
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void saveOlmSession(const std::string &curve25519,
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mtx::crypto::OlmSessionPtr session,
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uint64_t timestamp);
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std::vector<std::string> getOlmSessions(const std::string &curve25519);
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std::optional<mtx::crypto::OlmSessionPtr> getOlmSession(const std::string &curve25519,
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const std::string &session_id);
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std::optional<mtx::crypto::OlmSessionPtr> getLatestOlmSession(
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const std::string &curve25519);
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void saveOlmAccount(const std::string &pickled);
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std::string restoreOlmAccount();
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void storeSecret(const std::string &name, const std::string &secret);
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void deleteSecret(const std::string &name);
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std::optional<std::string> secret(const std::string &name);
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signals:
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void newReadReceipts(const QString &room_id, const std::vector<QString> &event_ids);
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void roomReadStatus(const std::map<QString, bool> &status);
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void removeNotification(const QString &room_id, const QString &event_id);
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void userKeysUpdate(const std::string &sync_token,
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const mtx::responses::QueryKeys &keyQuery);
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void verificationStatusChanged(const std::string &userid);
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void secretChanged(const std::string name);
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private:
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//! Save an invited room.
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void saveInvite(lmdb::txn &txn,
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lmdb::dbi &statesdb,
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lmdb::dbi &membersdb,
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const mtx::responses::InvitedRoom &room);
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//! Add a notification containing a user mention to the db.
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void saveTimelineMentions(lmdb::txn &txn,
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const std::string &room_id,
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const QList<mtx::responses::Notification> &res);
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//! Get timeline items that a user was mentions in for a given room
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mtx::responses::Notifications getTimelineMentionsForRoom(lmdb::txn &txn,
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const std::string &room_id);
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QString getInviteRoomName(lmdb::txn &txn, lmdb::dbi &statesdb, lmdb::dbi &membersdb);
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QString getInviteRoomTopic(lmdb::txn &txn, lmdb::dbi &statesdb);
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QString getInviteRoomAvatarUrl(lmdb::txn &txn, lmdb::dbi &statesdb, lmdb::dbi &membersdb);
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std::optional<MemberInfo> getMember(const std::string &room_id, const std::string &user_id);
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std::string getLastEventId(lmdb::txn &txn, const std::string &room_id);
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DescInfo getLastMessageInfo(lmdb::txn &txn, const std::string &room_id);
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void saveTimelineMessages(lmdb::txn &txn,
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const std::string &room_id,
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const mtx::responses::Timeline &res);
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//! retrieve a specific event from account data
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//! pass empty room_id for global account data
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std::optional<mtx::events::collections::RoomAccountDataEvents>
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getAccountData(lmdb::txn &txn, mtx::events::EventType type, const std::string &room_id);
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bool isHiddenEvent(lmdb::txn &txn,
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mtx::events::collections::TimelineEvents e,
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const std::string &room_id);
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//! Remove a room from the cache.
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// void removeLeftRoom(lmdb::txn &txn, const std::string &room_id);
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template<class T>
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void saveStateEvents(lmdb::txn &txn,
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const lmdb::dbi &statesdb,
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const lmdb::dbi &membersdb,
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const std::string &room_id,
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const std::vector<T> &events)
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{
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for (const auto &e : events)
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saveStateEvent(txn, statesdb, membersdb, room_id, e);
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}
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template<class T>
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void saveStateEvent(lmdb::txn &txn,
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const lmdb::dbi &statesdb,
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const lmdb::dbi &membersdb,
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const std::string &room_id,
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const T &event)
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{
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using namespace mtx::events;
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using namespace mtx::events::state;
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if (auto e = std::get_if<StateEvent<Member>>(&event); e != nullptr) {
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switch (e->content.membership) {
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//
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// We only keep users with invite or join membership.
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//
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case Membership::Invite:
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case Membership::Join: {
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auto display_name = e->content.display_name.empty()
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? e->state_key
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: e->content.display_name;
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// Lightweight representation of a member.
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MemberInfo tmp{display_name, e->content.avatar_url};
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lmdb::dbi_put(txn,
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membersdb,
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lmdb::val(e->state_key),
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lmdb::val(json(tmp).dump()));
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break;
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}
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default: {
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lmdb::dbi_del(
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txn, membersdb, lmdb::val(e->state_key), lmdb::val(""));
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break;
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}
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}
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return;
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} else if (std::holds_alternative<StateEvent<Encryption>>(event)) {
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setEncryptedRoom(txn, room_id);
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return;
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}
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if (!isStateEvent(event))
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return;
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std::visit(
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[&txn, &statesdb](auto e) {
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lmdb::dbi_put(
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txn, statesdb, lmdb::val(to_string(e.type)), lmdb::val(json(e).dump()));
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},
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event);
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}
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template<class T>
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bool isStateEvent(const T &e)
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{
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using namespace mtx::events;
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using namespace mtx::events::state;
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return std::holds_alternative<StateEvent<Aliases>>(e) ||
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std::holds_alternative<StateEvent<state::Avatar>>(e) ||
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std::holds_alternative<StateEvent<CanonicalAlias>>(e) ||
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std::holds_alternative<StateEvent<Create>>(e) ||
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std::holds_alternative<StateEvent<GuestAccess>>(e) ||
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std::holds_alternative<StateEvent<HistoryVisibility>>(e) ||
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std::holds_alternative<StateEvent<JoinRules>>(e) ||
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std::holds_alternative<StateEvent<Name>>(e) ||
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std::holds_alternative<StateEvent<Member>>(e) ||
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std::holds_alternative<StateEvent<PowerLevels>>(e) ||
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std::holds_alternative<StateEvent<Topic>>(e);
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}
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template<class T>
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bool containsStateUpdates(const T &e)
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{
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using namespace mtx::events;
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using namespace mtx::events::state;
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return std::holds_alternative<StateEvent<state::Avatar>>(e) ||
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std::holds_alternative<StateEvent<CanonicalAlias>>(e) ||
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std::holds_alternative<StateEvent<Name>>(e) ||
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std::holds_alternative<StateEvent<Member>>(e) ||
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std::holds_alternative<StateEvent<Topic>>(e);
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}
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bool containsStateUpdates(const mtx::events::collections::StrippedEvents &e)
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{
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using namespace mtx::events;
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using namespace mtx::events::state;
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return std::holds_alternative<StrippedEvent<state::Avatar>>(e) ||
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std::holds_alternative<StrippedEvent<CanonicalAlias>>(e) ||
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std::holds_alternative<StrippedEvent<Name>>(e) ||
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std::holds_alternative<StrippedEvent<Member>>(e) ||
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std::holds_alternative<StrippedEvent<Topic>>(e);
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}
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void saveInvites(lmdb::txn &txn,
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const std::map<std::string, mtx::responses::InvitedRoom> &rooms);
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void savePresence(
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lmdb::txn &txn,
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const std::vector<mtx::events::Event<mtx::events::presence::Presence>> &presenceUpdates);
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//! Sends signals for the rooms that are removed.
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void removeLeftRooms(lmdb::txn &txn,
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const std::map<std::string, mtx::responses::LeftRoom> &rooms)
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{
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for (const auto &room : rooms) {
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removeRoom(txn, room.first);
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// Clean up leftover invites.
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removeInvite(txn, room.first);
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}
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}
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lmdb::dbi getPendingReceiptsDb(lmdb::txn &txn)
|
|
{
|
|
return lmdb::dbi::open(txn, "pending_receipts", MDB_CREATE);
|
|
}
|
|
|
|
lmdb::dbi getEventsDb(lmdb::txn &txn, const std::string &room_id)
|
|
{
|
|
return lmdb::dbi::open(txn, std::string(room_id + "/events").c_str(), MDB_CREATE);
|
|
}
|
|
|
|
lmdb::dbi getEventOrderDb(lmdb::txn &txn, const std::string &room_id)
|
|
{
|
|
return lmdb::dbi::open(
|
|
txn, std::string(room_id + "/event_order").c_str(), MDB_CREATE | MDB_INTEGERKEY);
|
|
}
|
|
|
|
// inverse of EventOrderDb
|
|
lmdb::dbi getEventToOrderDb(lmdb::txn &txn, const std::string &room_id)
|
|
{
|
|
return lmdb::dbi::open(
|
|
txn, std::string(room_id + "/event2order").c_str(), MDB_CREATE);
|
|
}
|
|
|
|
lmdb::dbi getMessageToOrderDb(lmdb::txn &txn, const std::string &room_id)
|
|
{
|
|
return lmdb::dbi::open(
|
|
txn, std::string(room_id + "/msg2order").c_str(), MDB_CREATE);
|
|
}
|
|
|
|
lmdb::dbi getOrderToMessageDb(lmdb::txn &txn, const std::string &room_id)
|
|
{
|
|
return lmdb::dbi::open(
|
|
txn, std::string(room_id + "/order2msg").c_str(), MDB_CREATE | MDB_INTEGERKEY);
|
|
}
|
|
|
|
lmdb::dbi getPendingMessagesDb(lmdb::txn &txn, const std::string &room_id)
|
|
{
|
|
return lmdb::dbi::open(
|
|
txn, std::string(room_id + "/pending").c_str(), MDB_CREATE | MDB_INTEGERKEY);
|
|
}
|
|
|
|
lmdb::dbi getRelationsDb(lmdb::txn &txn, const std::string &room_id)
|
|
{
|
|
return lmdb::dbi::open(
|
|
txn, std::string(room_id + "/related").c_str(), MDB_CREATE | MDB_DUPSORT);
|
|
}
|
|
|
|
lmdb::dbi getInviteStatesDb(lmdb::txn &txn, const std::string &room_id)
|
|
{
|
|
return lmdb::dbi::open(
|
|
txn, std::string(room_id + "/invite_state").c_str(), MDB_CREATE);
|
|
}
|
|
|
|
lmdb::dbi getInviteMembersDb(lmdb::txn &txn, const std::string &room_id)
|
|
{
|
|
return lmdb::dbi::open(
|
|
txn, std::string(room_id + "/invite_members").c_str(), MDB_CREATE);
|
|
}
|
|
|
|
lmdb::dbi getStatesDb(lmdb::txn &txn, const std::string &room_id)
|
|
{
|
|
return lmdb::dbi::open(txn, std::string(room_id + "/state").c_str(), MDB_CREATE);
|
|
}
|
|
|
|
lmdb::dbi getAccountDataDb(lmdb::txn &txn, const std::string &room_id)
|
|
{
|
|
return lmdb::dbi::open(
|
|
txn, std::string(room_id + "/account_data").c_str(), MDB_CREATE);
|
|
}
|
|
|
|
lmdb::dbi getMembersDb(lmdb::txn &txn, const std::string &room_id)
|
|
{
|
|
return lmdb::dbi::open(txn, std::string(room_id + "/members").c_str(), MDB_CREATE);
|
|
}
|
|
|
|
lmdb::dbi getMentionsDb(lmdb::txn &txn, const std::string &room_id)
|
|
{
|
|
return lmdb::dbi::open(txn, std::string(room_id + "/mentions").c_str(), MDB_CREATE);
|
|
}
|
|
|
|
lmdb::dbi getPresenceDb(lmdb::txn &txn)
|
|
{
|
|
return lmdb::dbi::open(txn, "presence", MDB_CREATE);
|
|
}
|
|
|
|
lmdb::dbi getUserKeysDb(lmdb::txn &txn)
|
|
{
|
|
return lmdb::dbi::open(txn, "user_key", MDB_CREATE);
|
|
}
|
|
|
|
lmdb::dbi getVerificationDb(lmdb::txn &txn)
|
|
{
|
|
return lmdb::dbi::open(txn, "verified", MDB_CREATE);
|
|
}
|
|
|
|
//! Retrieves or creates the database that stores the open OLM sessions between our device
|
|
//! and the given curve25519 key which represents another device.
|
|
//!
|
|
//! Each entry is a map from the session_id to the pickled representation of the session.
|
|
lmdb::dbi getOlmSessionsDb(lmdb::txn &txn, const std::string &curve25519_key)
|
|
{
|
|
return lmdb::dbi::open(
|
|
txn, std::string("olm_sessions.v2/" + curve25519_key).c_str(), MDB_CREATE);
|
|
}
|
|
|
|
QString getDisplayName(const mtx::events::StateEvent<mtx::events::state::Member> &event)
|
|
{
|
|
if (!event.content.display_name.empty())
|
|
return QString::fromStdString(event.content.display_name);
|
|
|
|
return QString::fromStdString(event.state_key);
|
|
}
|
|
|
|
std::optional<VerificationCache> verificationCache(const std::string &user_id);
|
|
|
|
void setNextBatchToken(lmdb::txn &txn, const std::string &token);
|
|
void setNextBatchToken(lmdb::txn &txn, const QString &token);
|
|
|
|
lmdb::env env_;
|
|
lmdb::dbi syncStateDb_;
|
|
lmdb::dbi roomsDb_;
|
|
lmdb::dbi invitesDb_;
|
|
lmdb::dbi mediaDb_;
|
|
lmdb::dbi readReceiptsDb_;
|
|
lmdb::dbi notificationsDb_;
|
|
|
|
lmdb::dbi devicesDb_;
|
|
lmdb::dbi deviceKeysDb_;
|
|
|
|
lmdb::dbi inboundMegolmSessionDb_;
|
|
lmdb::dbi outboundMegolmSessionDb_;
|
|
|
|
QString localUserId_;
|
|
QString cacheDirectory_;
|
|
|
|
VerificationStorage verification_storage;
|
|
};
|
|
|
|
namespace cache {
|
|
Cache *
|
|
client();
|
|
}
|