662 lines
24 KiB
C++
662 lines
24 KiB
C++
/*
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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 <boost/optional.hpp>
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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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#include <json.hpp>
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#include <lmdb++.h>
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#include <mtx/events/join_rules.hpp>
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#include <mtx/responses.hpp>
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#include <mtxclient/crypto/client.hpp>
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#include <mutex>
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#include "Logging.hpp"
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using mtx::events::state::JoinRule;
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struct RoomMember
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{
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QString user_id;
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QString display_name;
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QImage avatar;
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};
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struct SearchResult
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{
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QString user_id;
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QString display_name;
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};
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static int
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numeric_key_comparison(const MDB_val *a, const MDB_val *b)
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{
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auto lhs = std::stoull(std::string((char *)a->mv_data, a->mv_size));
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auto rhs = std::stoull(std::string((char *)b->mv_data, b->mv_size));
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if (lhs < rhs)
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return 1;
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else if (lhs == rhs)
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return 0;
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return -1;
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}
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Q_DECLARE_METATYPE(SearchResult)
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Q_DECLARE_METATYPE(QVector<SearchResult>)
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Q_DECLARE_METATYPE(RoomMember)
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Q_DECLARE_METATYPE(mtx::responses::Timeline)
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//! Used to uniquely identify a list of read receipts.
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struct ReadReceiptKey
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{
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std::string event_id;
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std::string room_id;
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};
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inline void
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to_json(json &j, const ReadReceiptKey &key)
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{
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j = json{{"event_id", key.event_id}, {"room_id", key.room_id}};
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}
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inline void
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from_json(const json &j, ReadReceiptKey &key)
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{
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key.event_id = j.at("event_id").get<std::string>();
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key.room_id = j.at("room_id").get<std::string>();
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}
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struct DescInfo
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{
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QString username;
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QString userid;
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QString body;
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QString timestamp;
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QDateTime datetime;
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};
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//! UI info associated with a room.
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struct RoomInfo
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{
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//! The calculated name of the room.
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std::string name;
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//! The topic of the room.
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std::string topic;
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//! The calculated avatar url of the room.
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std::string avatar_url;
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//! Whether or not the room is an invite.
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bool is_invite = false;
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//! Total number of members in the room.
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int16_t member_count = 0;
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//! Who can access to the room.
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JoinRule join_rule = JoinRule::Public;
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bool guest_access = false;
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//! Metadata describing the last message in the timeline.
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DescInfo msgInfo;
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};
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inline void
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to_json(json &j, const RoomInfo &info)
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{
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j["name"] = info.name;
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j["topic"] = info.topic;
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j["avatar_url"] = info.avatar_url;
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j["is_invite"] = info.is_invite;
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j["join_rule"] = info.join_rule;
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j["guest_access"] = info.guest_access;
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if (info.member_count != 0)
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j["member_count"] = info.member_count;
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}
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inline void
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from_json(const json &j, RoomInfo &info)
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{
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info.name = j.at("name");
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info.topic = j.at("topic");
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info.avatar_url = j.at("avatar_url");
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info.is_invite = j.at("is_invite");
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info.join_rule = j.at("join_rule");
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info.guest_access = j.at("guest_access");
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if (j.count("member_count"))
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info.member_count = j.at("member_count");
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}
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//! Basic information per member;
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struct MemberInfo
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{
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std::string name;
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std::string avatar_url;
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};
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inline void
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to_json(json &j, const MemberInfo &info)
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{
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j["name"] = info.name;
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j["avatar_url"] = info.avatar_url;
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}
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inline void
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from_json(const json &j, MemberInfo &info)
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{
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info.name = j.at("name");
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info.avatar_url = j.at("avatar_url");
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}
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struct RoomSearchResult
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{
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std::string room_id;
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RoomInfo info;
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QImage img;
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};
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Q_DECLARE_METATYPE(RoomSearchResult)
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Q_DECLARE_METATYPE(RoomInfo)
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// Extra information associated with an outbound megolm session.
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struct OutboundGroupSessionData
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{
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std::string session_id;
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std::string session_key;
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uint64_t message_index = 0;
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};
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inline void
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to_json(nlohmann::json &obj, const OutboundGroupSessionData &msg)
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{
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obj["session_id"] = msg.session_id;
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obj["session_key"] = msg.session_key;
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obj["message_index"] = msg.message_index;
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}
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inline void
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from_json(const nlohmann::json &obj, OutboundGroupSessionData &msg)
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{
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msg.session_id = obj.at("session_id");
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msg.session_key = obj.at("session_key");
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msg.message_index = obj.at("message_index");
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}
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struct OutboundGroupSessionDataRef
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{
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OlmOutboundGroupSession *session;
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OutboundGroupSessionData data;
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};
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struct DevicePublicKeys
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{
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std::string ed25519;
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std::string curve25519;
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};
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inline void
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to_json(nlohmann::json &obj, const DevicePublicKeys &msg)
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{
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obj["ed25519"] = msg.ed25519;
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obj["curve25519"] = msg.curve25519;
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}
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inline void
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from_json(const nlohmann::json &obj, DevicePublicKeys &msg)
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{
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msg.ed25519 = obj.at("ed25519");
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msg.curve25519 = obj.at("curve25519");
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}
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//! Represents a unique megolm session identifier.
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struct MegolmSessionIndex
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{
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//! The room in which this session exists.
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std::string room_id;
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//! The session_id of the megolm session.
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std::string session_id;
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//! The curve25519 public key of the sender.
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std::string sender_key;
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//! Representation to be used in a hash map.
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std::string to_hash() const { return room_id + session_id + sender_key; }
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};
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struct OlmSessionStorage
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{
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// Megolm sessions
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std::map<std::string, mtx::crypto::InboundGroupSessionPtr> group_inbound_sessions;
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std::map<std::string, mtx::crypto::OutboundGroupSessionPtr> group_outbound_sessions;
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std::map<std::string, OutboundGroupSessionData> group_outbound_session_data;
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// Guards for accessing megolm sessions.
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std::mutex group_outbound_mtx;
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std::mutex group_inbound_mtx;
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};
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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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static QHash<QString, QString> DisplayNames;
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static QHash<QString, QString> AvatarUrls;
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static std::string displayName(const std::string &room_id, const std::string &user_id);
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static QString displayName(const QString &room_id, const QString &user_id);
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static QString avatarUrl(const QString &room_id, const QString &user_id);
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static void removeDisplayName(const QString &room_id, const QString &user_id);
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static void removeAvatarUrl(const QString &room_id, const QString &user_id);
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static void insertDisplayName(const QString &room_id,
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const QString &user_id,
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const QString &display_name);
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static void insertAvatarUrl(const QString &room_id,
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const QString &user_id,
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const QString &avatar_url);
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//! Load saved data for the display names & avatars.
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void populateMembers();
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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::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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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,
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lmdb::dbi &statesdb,
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lmdb::dbi &membersdb,
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const QString &room_id);
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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 removeRoom(const QString &roomid) { removeRoom(roomid.toStdString()); };
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void setup();
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bool isFormatValid();
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void setCurrentFormat();
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std::map<QString, mtx::responses::Timeline> roomMessages();
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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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QByteArray image(const std::string &url) const
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{
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return image(QString::fromStdString(url));
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}
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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::map<QString, RoomInfo> getRoomInfo(const std::vector<std::string> &rooms);
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std::map<QString, RoomInfo> roomUpdates(const mtx::responses::Sync &sync)
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{
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return getRoomInfo(roomsWithStateUpdates(sync));
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}
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QVector<SearchResult> searchUsers(const std::string &room_id,
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const std::string &query,
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std::uint8_t max_items = 5);
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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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//! 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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//! Save the public keys for a device.
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void saveDeviceKeys(const std::string &device_id);
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void getDeviceKeys(const std::string &device_id);
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//! Save the device list for a user.
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void setDeviceList(const std::string &user_id, const std::vector<std::string> &devices);
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std::vector<std::string> getDeviceList(const std::string &user_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, int message_index);
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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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OlmInboundGroupSession *getInboundMegolmSession(const MegolmSessionIndex &index);
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bool inboundMegolmSessionExists(const MegolmSessionIndex &index) noexcept;
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//
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// Olm Sessions
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//
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void saveOlmSession(const std::string &curve25519, mtx::crypto::OlmSessionPtr session);
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std::vector<std::string> getOlmSessions(const std::string &curve25519);
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boost::optional<mtx::crypto::OlmSessionPtr> getOlmSession(const std::string &curve25519,
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const std::string &session_id);
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void saveOlmAccount(const std::string &pickled);
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std::string restoreOlmAccount();
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void restoreSessions();
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OlmSessionStorage session_storage;
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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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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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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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mtx::responses::Timeline getTimelineMessages(lmdb::txn &txn, 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 (mpark::holds_alternative<StateEvent<Member>>(event)) {
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const auto e = mpark::get<StateEvent<Member>>(event);
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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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insertDisplayName(QString::fromStdString(room_id),
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QString::fromStdString(e.state_key),
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QString::fromStdString(display_name));
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insertAvatarUrl(QString::fromStdString(room_id),
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QString::fromStdString(e.state_key),
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QString::fromStdString(e.content.avatar_url));
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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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removeDisplayName(QString::fromStdString(room_id),
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QString::fromStdString(e.state_key));
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removeAvatarUrl(QString::fromStdString(room_id),
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QString::fromStdString(e.state_key));
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break;
|
|
}
|
|
}
|
|
|
|
return;
|
|
} else if (mpark::holds_alternative<StateEvent<Encryption>>(event)) {
|
|
setEncryptedRoom(txn, room_id);
|
|
return;
|
|
}
|
|
|
|
if (!isStateEvent(event))
|
|
return;
|
|
|
|
mpark::visit(
|
|
[&txn, &statesdb](auto e) {
|
|
lmdb::dbi_put(
|
|
txn, statesdb, lmdb::val(to_string(e.type)), lmdb::val(json(e).dump()));
|
|
},
|
|
event);
|
|
}
|
|
|
|
template<class T>
|
|
bool isStateEvent(const T &e)
|
|
{
|
|
using namespace mtx::events;
|
|
using namespace mtx::events::state;
|
|
|
|
return mpark::holds_alternative<StateEvent<Aliases>>(e) ||
|
|
mpark::holds_alternative<StateEvent<state::Avatar>>(e) ||
|
|
mpark::holds_alternative<StateEvent<CanonicalAlias>>(e) ||
|
|
mpark::holds_alternative<StateEvent<Create>>(e) ||
|
|
mpark::holds_alternative<StateEvent<GuestAccess>>(e) ||
|
|
mpark::holds_alternative<StateEvent<HistoryVisibility>>(e) ||
|
|
mpark::holds_alternative<StateEvent<JoinRules>>(e) ||
|
|
mpark::holds_alternative<StateEvent<Name>>(e) ||
|
|
mpark::holds_alternative<StateEvent<Member>>(e) ||
|
|
mpark::holds_alternative<StateEvent<PowerLevels>>(e) ||
|
|
mpark::holds_alternative<StateEvent<Topic>>(e);
|
|
}
|
|
|
|
template<class T>
|
|
bool containsStateUpdates(const T &e)
|
|
{
|
|
using namespace mtx::events;
|
|
using namespace mtx::events::state;
|
|
|
|
return mpark::holds_alternative<StateEvent<state::Avatar>>(e) ||
|
|
mpark::holds_alternative<StateEvent<CanonicalAlias>>(e) ||
|
|
mpark::holds_alternative<StateEvent<Name>>(e) ||
|
|
mpark::holds_alternative<StateEvent<Member>>(e) ||
|
|
mpark::holds_alternative<StateEvent<Topic>>(e);
|
|
}
|
|
|
|
bool containsStateUpdates(const mtx::events::collections::StrippedEvents &e)
|
|
{
|
|
using namespace mtx::events;
|
|
using namespace mtx::events::state;
|
|
|
|
return mpark::holds_alternative<StrippedEvent<state::Avatar>>(e) ||
|
|
mpark::holds_alternative<StrippedEvent<CanonicalAlias>>(e) ||
|
|
mpark::holds_alternative<StrippedEvent<Name>>(e) ||
|
|
mpark::holds_alternative<StrippedEvent<Member>>(e) ||
|
|
mpark::holds_alternative<StrippedEvent<Topic>>(e);
|
|
}
|
|
|
|
void saveInvites(lmdb::txn &txn,
|
|
const std::map<std::string, mtx::responses::InvitedRoom> &rooms);
|
|
|
|
//! Sends signals for the rooms that are removed.
|
|
void removeLeftRooms(lmdb::txn &txn,
|
|
const std::map<std::string, mtx::responses::LeftRoom> &rooms)
|
|
{
|
|
for (const auto &room : rooms) {
|
|
removeRoom(txn, room.first);
|
|
|
|
// Clean up leftover invites.
|
|
removeInvite(txn, room.first);
|
|
}
|
|
}
|
|
|
|
lmdb::dbi getMessagesDb(lmdb::txn &txn, const std::string &room_id)
|
|
{
|
|
auto db =
|
|
lmdb::dbi::open(txn, std::string(room_id + "/messages").c_str(), MDB_CREATE);
|
|
lmdb::dbi_set_compare(txn, db, numeric_key_comparison);
|
|
|
|
return db;
|
|
}
|
|
|
|
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 getMembersDb(lmdb::txn &txn, const std::string &room_id)
|
|
{
|
|
return lmdb::dbi::open(txn, std::string(room_id + "/members").c_str(), 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/" + 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);
|
|
}
|
|
|
|
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_;
|
|
};
|
|
|
|
namespace cache {
|
|
void
|
|
init(const QString &user_id);
|
|
|
|
Cache *
|
|
client();
|
|
}
|