diff --git a/src/timeline/TimelineModel.cpp b/src/timeline/TimelineModel.cpp
new file mode 100644
index 00000000..ab7d3d47
--- /dev/null
+++ b/src/timeline/TimelineModel.cpp
@@ -0,0 +1,1220 @@
+#include "TimelineModel.h"
+
+#include <algorithm>
+#include <type_traits>
+
+#include <QRegularExpression>
+
+#include "ChatPage.h"
+#include "Logging.h"
+#include "MainWindow.h"
+#include "Olm.h"
+#include "TimelineViewManager.h"
+#include "Utils.h"
+#include "dialogs/RawMessage.h"
+
+Q_DECLARE_METATYPE(QModelIndex)
+
+namespace {
+template<class T>
+QString
+eventId(const mtx::events::RoomEvent<T> &event)
+{
+ return QString::fromStdString(event.event_id);
+}
+template<class T>
+QString
+roomId(const mtx::events::Event<T> &event)
+{
+ return QString::fromStdString(event.room_id);
+}
+template<class T>
+QString
+senderId(const mtx::events::RoomEvent<T> &event)
+{
+ return QString::fromStdString(event.sender);
+}
+
+template<class T>
+QDateTime
+eventTimestamp(const mtx::events::RoomEvent<T> &event)
+{
+ return QDateTime::fromMSecsSinceEpoch(event.origin_server_ts);
+}
+
+template<class T>
+std::string
+eventMsgType(const mtx::events::Event<T> &)
+{
+ return "";
+}
+template<class T>
+auto
+eventMsgType(const mtx::events::RoomEvent<T> &e) -> decltype(e.content.msgtype)
+{
+ return e.content.msgtype;
+}
+
+template<class T>
+QString
+eventBody(const mtx::events::Event<T> &)
+{
+ return QString("");
+}
+template<class T>
+auto
+eventBody(const mtx::events::RoomEvent<T> &e)
+ -> std::enable_if_t<std::is_same<decltype(e.content.body), std::string>::value, QString>
+{
+ return QString::fromStdString(e.content.body);
+}
+
+template<class T>
+QString
+eventFormattedBody(const mtx::events::Event<T> &)
+{
+ return QString("");
+}
+template<class T>
+auto
+eventFormattedBody(const mtx::events::RoomEvent<T> &e)
+ -> std::enable_if_t<std::is_same<decltype(e.content.formatted_body), std::string>::value, QString>
+{
+ auto temp = e.content.formatted_body;
+ if (!temp.empty()) {
+ return QString::fromStdString(temp);
+ } else {
+ return QString::fromStdString(e.content.body).toHtmlEscaped().replace("\n", "<br>");
+ }
+}
+
+template<class T>
+QString
+eventUrl(const mtx::events::Event<T> &)
+{
+ return "";
+}
+template<class T>
+auto
+eventUrl(const mtx::events::RoomEvent<T> &e)
+ -> std::enable_if_t<std::is_same<decltype(e.content.url), std::string>::value, QString>
+{
+ return QString::fromStdString(e.content.url);
+}
+
+template<class T>
+QString
+eventThumbnailUrl(const mtx::events::Event<T> &)
+{
+ return "";
+}
+template<class T>
+auto
+eventThumbnailUrl(const mtx::events::RoomEvent<T> &e)
+ -> std::enable_if_t<std::is_same<decltype(e.content.info.thumbnail_url), std::string>::value,
+ QString>
+{
+ return QString::fromStdString(e.content.info.thumbnail_url);
+}
+
+template<class T>
+QString
+eventFilename(const mtx::events::Event<T> &)
+{
+ return "";
+}
+QString
+eventFilename(const mtx::events::RoomEvent<mtx::events::msg::Audio> &e)
+{
+ // body may be the original filename
+ return QString::fromStdString(e.content.body);
+}
+QString
+eventFilename(const mtx::events::RoomEvent<mtx::events::msg::Video> &e)
+{
+ // body may be the original filename
+ return QString::fromStdString(e.content.body);
+}
+QString
+eventFilename(const mtx::events::RoomEvent<mtx::events::msg::Image> &e)
+{
+ // body may be the original filename
+ return QString::fromStdString(e.content.body);
+}
+QString
+eventFilename(const mtx::events::RoomEvent<mtx::events::msg::File> &e)
+{
+ // body may be the original filename
+ if (!e.content.filename.empty())
+ return QString::fromStdString(e.content.filename);
+ return QString::fromStdString(e.content.body);
+}
+
+template<class T>
+auto
+eventFilesize(const mtx::events::RoomEvent<T> &e) -> decltype(e.content.info.size)
+{
+ return e.content.info.size;
+}
+
+template<class T>
+int64_t
+eventFilesize(const mtx::events::Event<T> &)
+{
+ return 0;
+}
+
+template<class T>
+QString
+eventMimeType(const mtx::events::Event<T> &)
+{
+ return QString();
+}
+template<class T>
+auto
+eventMimeType(const mtx::events::RoomEvent<T> &e)
+ -> std::enable_if_t<std::is_same<decltype(e.content.info.mimetype), std::string>::value, QString>
+{
+ return QString::fromStdString(e.content.info.mimetype);
+}
+
+template<class T>
+QString
+eventRelatesTo(const mtx::events::Event<T> &)
+{
+ return QString();
+}
+template<class T>
+auto
+eventRelatesTo(const mtx::events::RoomEvent<T> &e) -> std::enable_if_t<
+ std::is_same<decltype(e.content.relates_to.in_reply_to.event_id), std::string>::value,
+ QString>
+{
+ return QString::fromStdString(e.content.relates_to.in_reply_to.event_id);
+}
+
+template<class T>
+qml_mtx_events::EventType
+toRoomEventType(const mtx::events::Event<T> &e)
+{
+ using mtx::events::EventType;
+ switch (e.type) {
+ case EventType::RoomKeyRequest:
+ return qml_mtx_events::EventType::KeyRequest;
+ case EventType::RoomAliases:
+ return qml_mtx_events::EventType::Aliases;
+ case EventType::RoomAvatar:
+ return qml_mtx_events::EventType::Avatar;
+ case EventType::RoomCanonicalAlias:
+ return qml_mtx_events::EventType::CanonicalAlias;
+ case EventType::RoomCreate:
+ return qml_mtx_events::EventType::Create;
+ case EventType::RoomEncrypted:
+ return qml_mtx_events::EventType::Encrypted;
+ case EventType::RoomEncryption:
+ return qml_mtx_events::EventType::Encryption;
+ case EventType::RoomGuestAccess:
+ return qml_mtx_events::EventType::GuestAccess;
+ case EventType::RoomHistoryVisibility:
+ return qml_mtx_events::EventType::HistoryVisibility;
+ case EventType::RoomJoinRules:
+ return qml_mtx_events::EventType::JoinRules;
+ case EventType::RoomMember:
+ return qml_mtx_events::EventType::Member;
+ case EventType::RoomMessage:
+ return qml_mtx_events::EventType::UnknownMessage;
+ case EventType::RoomName:
+ return qml_mtx_events::EventType::Name;
+ case EventType::RoomPowerLevels:
+ return qml_mtx_events::EventType::PowerLevels;
+ case EventType::RoomTopic:
+ return qml_mtx_events::EventType::Topic;
+ case EventType::RoomTombstone:
+ return qml_mtx_events::EventType::Tombstone;
+ case EventType::RoomRedaction:
+ return qml_mtx_events::EventType::Redaction;
+ case EventType::RoomPinnedEvents:
+ return qml_mtx_events::EventType::PinnedEvents;
+ case EventType::Sticker:
+ return qml_mtx_events::EventType::Sticker;
+ case EventType::Tag:
+ return qml_mtx_events::EventType::Tag;
+ case EventType::Unsupported:
+ default:
+ return qml_mtx_events::EventType::Unsupported;
+ }
+}
+qml_mtx_events::EventType
+toRoomEventType(const mtx::events::Event<mtx::events::msg::Audio> &)
+{
+ return qml_mtx_events::EventType::AudioMessage;
+}
+qml_mtx_events::EventType
+toRoomEventType(const mtx::events::Event<mtx::events::msg::Emote> &)
+{
+ return qml_mtx_events::EventType::EmoteMessage;
+}
+qml_mtx_events::EventType
+toRoomEventType(const mtx::events::Event<mtx::events::msg::File> &)
+{
+ return qml_mtx_events::EventType::FileMessage;
+}
+qml_mtx_events::EventType
+toRoomEventType(const mtx::events::Event<mtx::events::msg::Image> &)
+{
+ return qml_mtx_events::EventType::ImageMessage;
+}
+qml_mtx_events::EventType
+toRoomEventType(const mtx::events::Event<mtx::events::msg::Notice> &)
+{
+ return qml_mtx_events::EventType::NoticeMessage;
+}
+qml_mtx_events::EventType
+toRoomEventType(const mtx::events::Event<mtx::events::msg::Text> &)
+{
+ return qml_mtx_events::EventType::TextMessage;
+}
+qml_mtx_events::EventType
+toRoomEventType(const mtx::events::Event<mtx::events::msg::Video> &)
+{
+ return qml_mtx_events::EventType::VideoMessage;
+}
+
+qml_mtx_events::EventType
+toRoomEventType(const mtx::events::Event<mtx::events::msg::Redacted> &)
+{
+ return qml_mtx_events::EventType::Redacted;
+}
+// ::EventType::Type toRoomEventType(const Event<mtx::events::msg::Location> &e) { return
+// ::EventType::LocationMessage; }
+
+template<class T>
+uint64_t
+eventHeight(const mtx::events::Event<T> &)
+{
+ return -1;
+}
+template<class T>
+auto
+eventHeight(const mtx::events::RoomEvent<T> &e) -> decltype(e.content.info.h)
+{
+ return e.content.info.h;
+}
+template<class T>
+uint64_t
+eventWidth(const mtx::events::Event<T> &)
+{
+ return -1;
+}
+template<class T>
+auto
+eventWidth(const mtx::events::RoomEvent<T> &e) -> decltype(e.content.info.w)
+{
+ return e.content.info.w;
+}
+
+template<class T>
+double
+eventPropHeight(const mtx::events::RoomEvent<T> &e)
+{
+ auto w = eventWidth(e);
+ if (w == 0)
+ w = 1;
+ return eventHeight(e) / (double)w;
+}
+}
+
+TimelineModel::TimelineModel(TimelineViewManager *manager, QString room_id, QObject *parent)
+ : QAbstractListModel(parent)
+ , room_id_(room_id)
+ , manager_(manager)
+{
+ connect(
+ this, &TimelineModel::oldMessagesRetrieved, this, &TimelineModel::addBackwardsEvents);
+ connect(this, &TimelineModel::messageFailed, this, [this](QString txn_id) {
+ pending.remove(txn_id);
+ failed.insert(txn_id);
+ int idx = idToIndex(txn_id);
+ if (idx < 0) {
+ nhlog::ui()->warn("Failed index out of range");
+ return;
+ }
+ emit dataChanged(index(idx, 0), index(idx, 0));
+ });
+ connect(this, &TimelineModel::messageSent, this, [this](QString txn_id, QString event_id) {
+ int idx = idToIndex(txn_id);
+ if (idx < 0) {
+ nhlog::ui()->warn("Sent index out of range");
+ return;
+ }
+ eventOrder[idx] = event_id;
+ auto ev = events.value(txn_id);
+ ev = boost::apply_visitor(
+ [event_id](const auto &e) -> mtx::events::collections::TimelineEvents {
+ auto eventCopy = e;
+ eventCopy.event_id = event_id.toStdString();
+ return eventCopy;
+ },
+ ev);
+ events.remove(txn_id);
+ events.insert(event_id, ev);
+
+ // mark our messages as read
+ readEvent(event_id.toStdString());
+
+ // ask to be notified for read receipts
+ cache::client()->addPendingReceipt(room_id_, event_id);
+
+ emit dataChanged(index(idx, 0), index(idx, 0));
+ });
+ connect(this, &TimelineModel::redactionFailed, this, [](const QString &msg) {
+ emit ChatPage::instance()->showNotification(msg);
+ });
+}
+
+QHash<int, QByteArray>
+TimelineModel::roleNames() const
+{
+ return {
+ {Section, "section"},
+ {Type, "type"},
+ {Body, "body"},
+ {FormattedBody, "formattedBody"},
+ {UserId, "userId"},
+ {UserName, "userName"},
+ {Timestamp, "timestamp"},
+ {Url, "url"},
+ {ThumbnailUrl, "thumbnailUrl"},
+ {Filename, "filename"},
+ {Filesize, "filesize"},
+ {MimeType, "mimetype"},
+ {Height, "height"},
+ {Width, "width"},
+ {ProportionalHeight, "proportionalHeight"},
+ {Id, "id"},
+ {State, "state"},
+ {IsEncrypted, "isEncrypted"},
+ {ReplyTo, "replyTo"},
+ };
+}
+int
+TimelineModel::rowCount(const QModelIndex &parent) const
+{
+ Q_UNUSED(parent);
+ return (int)this->eventOrder.size();
+}
+
+QVariant
+TimelineModel::data(const QModelIndex &index, int role) const
+{
+ if (index.row() < 0 && index.row() >= (int)eventOrder.size())
+ return QVariant();
+
+ QString id = eventOrder[index.row()];
+
+ mtx::events::collections::TimelineEvents event = events.value(id);
+
+ if (auto e = boost::get<mtx::events::EncryptedEvent<mtx::events::msg::Encrypted>>(&event)) {
+ event = decryptEvent(*e).event;
+ }
+
+ switch (role) {
+ case Section: {
+ QDateTime date = boost::apply_visitor(
+ [](const auto &e) -> QDateTime { return eventTimestamp(e); }, event);
+ date.setTime(QTime());
+
+ QString userId =
+ boost::apply_visitor([](const auto &e) -> QString { return senderId(e); }, event);
+
+ for (int r = index.row() - 1; r > 0; r--) {
+ QDateTime prevDate = boost::apply_visitor(
+ [](const auto &e) -> QDateTime { return eventTimestamp(e); },
+ events.value(eventOrder[r]));
+ prevDate.setTime(QTime());
+ if (prevDate != date)
+ return QString("%2 %1").arg(date.toMSecsSinceEpoch()).arg(userId);
+
+ QString prevUserId =
+ boost::apply_visitor([](const auto &e) -> QString { return senderId(e); },
+ events.value(eventOrder[r]));
+ if (userId != prevUserId)
+ break;
+ }
+
+ return QString("%1").arg(userId);
+ }
+ case UserId:
+ return QVariant(boost::apply_visitor(
+ [](const auto &e) -> QString { return senderId(e); }, event));
+ case UserName:
+ return QVariant(displayName(boost::apply_visitor(
+ [](const auto &e) -> QString { return senderId(e); }, event)));
+
+ case Timestamp:
+ return QVariant(boost::apply_visitor(
+ [](const auto &e) -> QDateTime { return eventTimestamp(e); }, event));
+ case Type:
+ return QVariant(boost::apply_visitor(
+ [](const auto &e) -> qml_mtx_events::EventType { return toRoomEventType(e); },
+ event));
+ case Body:
+ return QVariant(utils::replaceEmoji(boost::apply_visitor(
+ [](const auto &e) -> QString { return eventBody(e); }, event)));
+ case FormattedBody:
+ return QVariant(
+ utils::replaceEmoji(
+ boost::apply_visitor(
+ [](const auto &e) -> QString { return eventFormattedBody(e); }, event))
+ .remove("<mx-reply>")
+ .remove("</mx-reply>"));
+ case Url:
+ return QVariant(boost::apply_visitor(
+ [](const auto &e) -> QString { return eventUrl(e); }, event));
+ case ThumbnailUrl:
+ return QVariant(boost::apply_visitor(
+ [](const auto &e) -> QString { return eventThumbnailUrl(e); }, event));
+ case Filename:
+ return QVariant(boost::apply_visitor(
+ [](const auto &e) -> QString { return eventFilename(e); }, event));
+ case Filesize:
+ return QVariant(boost::apply_visitor(
+ [](const auto &e) -> QString {
+ return utils::humanReadableFileSize(eventFilesize(e));
+ },
+ event));
+ case MimeType:
+ return QVariant(boost::apply_visitor(
+ [](const auto &e) -> QString { return eventMimeType(e); }, event));
+ case Height:
+ return QVariant(boost::apply_visitor(
+ [](const auto &e) -> qulonglong { return eventHeight(e); }, event));
+ case Width:
+ return QVariant(boost::apply_visitor(
+ [](const auto &e) -> qulonglong { return eventWidth(e); }, event));
+ case ProportionalHeight:
+ return QVariant(boost::apply_visitor(
+ [](const auto &e) -> double { return eventPropHeight(e); }, event));
+ case Id:
+ return id;
+ case State:
+ // only show read receipts for messages not from us
+ if (boost::apply_visitor([](const auto &e) -> QString { return senderId(e); },
+ event)
+ .toStdString() != http::client()->user_id().to_string())
+ return qml_mtx_events::Empty;
+ else if (failed.contains(id))
+ return qml_mtx_events::Failed;
+ else if (pending.contains(id))
+ return qml_mtx_events::Sent;
+ else if (read.contains(id) ||
+ cache::client()->readReceipts(id, room_id_).size() > 1)
+ return qml_mtx_events::Read;
+ else
+ return qml_mtx_events::Received;
+ case IsEncrypted: {
+ auto tempEvent = events[id];
+ return boost::get<mtx::events::EncryptedEvent<mtx::events::msg::Encrypted>>(
+ &tempEvent) != nullptr;
+ }
+ case ReplyTo: {
+ QString evId = boost::apply_visitor(
+ [](const auto &e) -> QString { return eventRelatesTo(e); }, event);
+ return QVariant(evId);
+ }
+ default:
+ return QVariant();
+ }
+}
+
+void
+TimelineModel::addEvents(const mtx::responses::Timeline &timeline)
+{
+ if (isInitialSync) {
+ prev_batch_token_ = QString::fromStdString(timeline.prev_batch);
+ isInitialSync = false;
+ }
+
+ if (timeline.events.empty())
+ return;
+
+ std::vector<QString> ids = internalAddEvents(timeline.events);
+
+ if (ids.empty())
+ return;
+
+ beginInsertRows(QModelIndex(),
+ static_cast<int>(this->eventOrder.size()),
+ static_cast<int>(this->eventOrder.size() + ids.size() - 1));
+ this->eventOrder.insert(this->eventOrder.end(), ids.begin(), ids.end());
+ endInsertRows();
+
+ updateLastMessage();
+}
+
+void
+TimelineModel::updateLastMessage()
+{
+ auto event = events.value(eventOrder.back());
+ if (auto e = boost::get<mtx::events::EncryptedEvent<mtx::events::msg::Encrypted>>(&event)) {
+ event = decryptEvent(*e).event;
+ }
+
+ auto description = utils::getMessageDescription(
+ event, QString::fromStdString(http::client()->user_id().to_string()), room_id_);
+ emit manager_->updateRoomsLastMessage(room_id_, description);
+}
+
+std::vector<QString>
+TimelineModel::internalAddEvents(
+ const std::vector<mtx::events::collections::TimelineEvents> &timeline)
+{
+ std::vector<QString> ids;
+ for (const auto &e : timeline) {
+ QString id =
+ boost::apply_visitor([](const auto &e) -> QString { return eventId(e); }, e);
+
+ if (this->events.contains(id)) {
+ this->events.insert(id, e);
+ int idx = idToIndex(id);
+ emit dataChanged(index(idx, 0), index(idx, 0));
+ continue;
+ }
+
+ if (auto redaction =
+ boost::get<mtx::events::RedactionEvent<mtx::events::msg::Redaction>>(&e)) {
+ QString redacts = QString::fromStdString(redaction->redacts);
+ auto redacted = std::find(eventOrder.begin(), eventOrder.end(), redacts);
+
+ if (redacted != eventOrder.end()) {
+ auto redactedEvent = boost::apply_visitor(
+ [](const auto &ev)
+ -> mtx::events::RoomEvent<mtx::events::msg::Redacted> {
+ mtx::events::RoomEvent<mtx::events::msg::Redacted>
+ replacement = {};
+ replacement.event_id = ev.event_id;
+ replacement.room_id = ev.room_id;
+ replacement.sender = ev.sender;
+ replacement.origin_server_ts = ev.origin_server_ts;
+ replacement.type = ev.type;
+ return replacement;
+ },
+ e);
+ events.insert(redacts, redactedEvent);
+
+ int row = (int)std::distance(eventOrder.begin(), redacted);
+ emit dataChanged(index(row, 0), index(row, 0));
+ }
+
+ continue; // don't insert redaction into timeline
+ }
+
+ this->events.insert(id, e);
+ ids.push_back(id);
+ }
+ return ids;
+}
+
+void
+TimelineModel::fetchHistory()
+{
+ if (paginationInProgress) {
+ nhlog::ui()->warn("Already loading older messages");
+ return;
+ }
+
+ paginationInProgress = true;
+ mtx::http::MessagesOpts opts;
+ opts.room_id = room_id_.toStdString();
+ opts.from = prev_batch_token_.toStdString();
+
+ nhlog::ui()->info("Paginationg room {}", opts.room_id);
+
+ http::client()->messages(
+ opts, [this, opts](const mtx::responses::Messages &res, mtx::http::RequestErr err) {
+ if (err) {
+ nhlog::net()->error("failed to call /messages ({}): {} - {}",
+ opts.room_id,
+ mtx::errors::to_string(err->matrix_error.errcode),
+ err->matrix_error.error);
+ paginationInProgress = false;
+ return;
+ }
+
+ emit oldMessagesRetrieved(std::move(res));
+ paginationInProgress = false;
+ });
+}
+
+void
+TimelineModel::setCurrentIndex(int index)
+{
+ auto oldIndex = idToIndex(currentId);
+ currentId = indexToId(index);
+ emit currentIndexChanged(index);
+
+ if (oldIndex < index && !pending.contains(currentId)) {
+ readEvent(currentId.toStdString());
+ }
+}
+
+void
+TimelineModel::readEvent(const std::string &id)
+{
+ http::client()->read_event(room_id_.toStdString(), id, [this](mtx::http::RequestErr err) {
+ if (err) {
+ nhlog::net()->warn("failed to read_event ({}, {})",
+ room_id_.toStdString(),
+ currentId.toStdString());
+ }
+ });
+}
+
+void
+TimelineModel::addBackwardsEvents(const mtx::responses::Messages &msgs)
+{
+ std::vector<QString> ids = internalAddEvents(msgs.chunk);
+
+ if (!ids.empty()) {
+ beginInsertRows(QModelIndex(), 0, static_cast<int>(ids.size() - 1));
+ this->eventOrder.insert(this->eventOrder.begin(), ids.rbegin(), ids.rend());
+ endInsertRows();
+ }
+
+ prev_batch_token_ = QString::fromStdString(msgs.end);
+}
+
+QColor
+TimelineModel::userColor(QString id, QColor background)
+{
+ if (!userColors.contains(id))
+ userColors.insert(
+ id, QColor(utils::generateContrastingHexColor(id, background.name())));
+ return userColors.value(id);
+}
+
+QString
+TimelineModel::displayName(QString id) const
+{
+ return Cache::displayName(room_id_, id);
+}
+
+QString
+TimelineModel::avatarUrl(QString id) const
+{
+ return Cache::avatarUrl(room_id_, id);
+}
+
+QString
+TimelineModel::formatDateSeparator(QDate date) const
+{
+ auto now = QDateTime::currentDateTime();
+
+ QString fmt = QLocale::system().dateFormat(QLocale::LongFormat);
+
+ if (now.date().year() == date.year()) {
+ QRegularExpression rx("[^a-zA-Z]*y+[^a-zA-Z]*");
+ fmt = fmt.remove(rx);
+ }
+
+ return date.toString(fmt);
+}
+
+QString
+TimelineModel::escapeEmoji(QString str) const
+{
+ return utils::replaceEmoji(str);
+}
+
+void
+TimelineModel::viewRawMessage(QString id) const
+{
+ std::string ev = utils::serialize_event(events.value(id)).dump(4);
+ auto dialog = new dialogs::RawMessage(QString::fromStdString(ev));
+ Q_UNUSED(dialog);
+}
+
+void
+
+TimelineModel::openUserProfile(QString userid) const
+{
+ MainWindow::instance()->openUserProfile(userid, room_id_);
+}
+
+DecryptionResult
+TimelineModel::decryptEvent(const mtx::events::EncryptedEvent<mtx::events::msg::Encrypted> &e) const
+{
+ MegolmSessionIndex index;
+ index.room_id = room_id_.toStdString();
+ index.session_id = e.content.session_id;
+ index.sender_key = e.content.sender_key;
+
+ mtx::events::RoomEvent<mtx::events::msg::Notice> dummy;
+ dummy.origin_server_ts = e.origin_server_ts;
+ dummy.event_id = e.event_id;
+ dummy.sender = e.sender;
+ dummy.content.body =
+ tr("-- Encrypted Event (No keys found for decryption) --",
+ "Placeholder, when the message was not decrypted yet or can't be decrypted")
+ .toStdString();
+
+ try {
+ if (!cache::client()->inboundMegolmSessionExists(index)) {
+ nhlog::crypto()->info("Could not find inbound megolm session ({}, {}, {})",
+ index.room_id,
+ index.session_id,
+ e.sender);
+ // TODO: request megolm session_id & session_key from the sender.
+ return {dummy, false};
+ }
+ } catch (const lmdb::error &e) {
+ nhlog::db()->critical("failed to check megolm session's existence: {}", e.what());
+ dummy.content.body = tr("-- Decryption Error (failed to communicate with DB) --",
+ "Placeholder, when the message can't be decrypted, because "
+ "the DB access failed when trying to lookup the session.")
+ .toStdString();
+ return {dummy, false};
+ }
+
+ std::string msg_str;
+ try {
+ auto session = cache::client()->getInboundMegolmSession(index);
+ auto res = olm::client()->decrypt_group_message(session, e.content.ciphertext);
+ msg_str = std::string((char *)res.data.data(), res.data.size());
+ } catch (const lmdb::error &e) {
+ nhlog::db()->critical("failed to retrieve megolm session with index ({}, {}, {})",
+ index.room_id,
+ index.session_id,
+ index.sender_key,
+ e.what());
+ dummy.content.body =
+ tr("-- Decryption Error (failed to retrieve megolm keys from db) --",
+ "Placeholder, when the message can't be decrypted, because the DB access "
+ "failed.")
+ .toStdString();
+ return {dummy, false};
+ } catch (const mtx::crypto::olm_exception &e) {
+ nhlog::crypto()->critical("failed to decrypt message with index ({}, {}, {}): {}",
+ index.room_id,
+ index.session_id,
+ index.sender_key,
+ e.what());
+ dummy.content.body =
+ tr("-- Decryption Error (%1) --",
+ "Placeholder, when the message can't be decrypted. In this case, the Olm "
+ "decrytion returned an error, which is passed ad %1")
+ .arg(e.what())
+ .toStdString();
+ return {dummy, false};
+ }
+
+ // Add missing fields for the event.
+ json body = json::parse(msg_str);
+ body["event_id"] = e.event_id;
+ body["sender"] = e.sender;
+ body["origin_server_ts"] = e.origin_server_ts;
+ body["unsigned"] = e.unsigned_data;
+
+ json event_array = json::array();
+ event_array.push_back(body);
+
+ std::vector<mtx::events::collections::TimelineEvents> temp_events;
+ mtx::responses::utils::parse_timeline_events(event_array, temp_events);
+
+ if (temp_events.size() == 1)
+ return {temp_events.at(0), true};
+
+ dummy.content.body =
+ tr("-- Encrypted Event (Unknown event type) --",
+ "Placeholder, when the message was decrypted, but we couldn't parse it, because "
+ "Nheko/mtxclient don't support that event type yet")
+ .toStdString();
+ return {dummy, false};
+}
+
+void
+TimelineModel::replyAction(QString id)
+{
+ auto event = events.value(id);
+ RelatedInfo related = boost::apply_visitor(
+ [](const auto &ev) -> RelatedInfo {
+ RelatedInfo related_ = {};
+ related_.quoted_user = QString::fromStdString(ev.sender);
+ related_.related_event = ev.event_id;
+ return related_;
+ },
+ event);
+ related.type = mtx::events::getMessageType(boost::apply_visitor(
+ [](const auto &e) -> std::string { return eventMsgType(e); }, event));
+ related.quoted_body = boost::apply_visitor(
+ [](const auto &e) -> QString { return eventFormattedBody(e); }, event);
+ related.quoted_body.remove(QRegularExpression(
+ "<mx-reply>.*</mx-reply>", QRegularExpression::DotMatchesEverythingOption));
+ nhlog::ui()->debug("after replacement: {}", related.quoted_body.toStdString());
+ related.room = room_id_;
+
+ if (related.quoted_body.isEmpty())
+ return;
+
+ ChatPage::instance()->messageReply(related);
+}
+
+void
+TimelineModel::readReceiptsAction(QString id) const
+{
+ MainWindow::instance()->openReadReceiptsDialog(id);
+}
+
+void
+TimelineModel::redactEvent(QString id)
+{
+ if (!id.isEmpty())
+ http::client()->redact_event(
+ room_id_.toStdString(),
+ id.toStdString(),
+ [this, id](const mtx::responses::EventId &, mtx::http::RequestErr err) {
+ if (err) {
+ emit redactionFailed(
+ tr("Message redaction failed: %1")
+ .arg(QString::fromStdString(err->matrix_error.error)));
+ return;
+ }
+
+ emit eventRedacted(id);
+ });
+}
+
+int
+TimelineModel::idToIndex(QString id) const
+{
+ if (id.isEmpty())
+ return -1;
+ for (int i = 0; i < (int)eventOrder.size(); i++)
+ if (id == eventOrder[i])
+ return i;
+ return -1;
+}
+
+QString
+TimelineModel::indexToId(int index) const
+{
+ if (index < 0 || index >= (int)eventOrder.size())
+ return "";
+ return eventOrder[index];
+}
+
+// Note: this will only be called for our messages
+void
+TimelineModel::markEventsAsRead(const std::vector<QString> &event_ids)
+{
+ for (const auto &id : event_ids) {
+ read.insert(id);
+ int idx = idToIndex(id);
+ if (idx < 0) {
+ nhlog::ui()->warn("Read index out of range");
+ return;
+ }
+ emit dataChanged(index(idx, 0), index(idx, 0));
+ }
+}
+
+void
+TimelineModel::sendEncryptedMessage(const std::string &txn_id, nlohmann::json content)
+{
+ const auto room_id = room_id_.toStdString();
+
+ using namespace mtx::events;
+ using namespace mtx::identifiers;
+
+ json doc{{"type", "m.room.message"}, {"content", content}, {"room_id", room_id}};
+
+ try {
+ // Check if we have already an outbound megolm session then we can use.
+ if (cache::client()->outboundMegolmSessionExists(room_id)) {
+ auto data = olm::encrypt_group_message(
+ room_id, http::client()->device_id(), doc.dump());
+
+ http::client()->send_room_message<msg::Encrypted, EventType::RoomEncrypted>(
+ room_id,
+ txn_id,
+ data,
+ [this, txn_id](const mtx::responses::EventId &res,
+ mtx::http::RequestErr err) {
+ if (err) {
+ const int status_code =
+ static_cast<int>(err->status_code);
+ nhlog::net()->warn("[{}] failed to send message: {} {}",
+ txn_id,
+ err->matrix_error.error,
+ status_code);
+ emit messageFailed(QString::fromStdString(txn_id));
+ }
+ emit messageSent(
+ QString::fromStdString(txn_id),
+ QString::fromStdString(res.event_id.to_string()));
+ });
+ return;
+ }
+
+ nhlog::ui()->debug("creating new outbound megolm session");
+
+ // Create a new outbound megolm session.
+ auto outbound_session = olm::client()->init_outbound_group_session();
+ const auto session_id = mtx::crypto::session_id(outbound_session.get());
+ const auto session_key = mtx::crypto::session_key(outbound_session.get());
+
+ // TODO: needs to be moved in the lib.
+ auto megolm_payload = json{{"algorithm", "m.megolm.v1.aes-sha2"},
+ {"room_id", room_id},
+ {"session_id", session_id},
+ {"session_key", session_key}};
+
+ // Saving the new megolm session.
+ // TODO: Maybe it's too early to save.
+ OutboundGroupSessionData session_data;
+ session_data.session_id = session_id;
+ session_data.session_key = session_key;
+ session_data.message_index = 0; // TODO Update me
+ cache::client()->saveOutboundMegolmSession(
+ room_id, session_data, std::move(outbound_session));
+
+ const auto members = cache::client()->roomMembers(room_id);
+ nhlog::ui()->info("retrieved {} members for {}", members.size(), room_id);
+
+ auto keeper =
+ std::make_shared<StateKeeper>([megolm_payload, room_id, doc, txn_id, this]() {
+ try {
+ auto data = olm::encrypt_group_message(
+ room_id, http::client()->device_id(), doc.dump());
+
+ http::client()
+ ->send_room_message<msg::Encrypted, EventType::RoomEncrypted>(
+ room_id,
+ txn_id,
+ data,
+ [this, txn_id](const mtx::responses::EventId &res,
+ mtx::http::RequestErr err) {
+ if (err) {
+ const int status_code =
+ static_cast<int>(err->status_code);
+ nhlog::net()->warn(
+ "[{}] failed to send message: {} {}",
+ txn_id,
+ err->matrix_error.error,
+ status_code);
+ emit messageFailed(
+ QString::fromStdString(txn_id));
+ }
+ emit messageSent(
+ QString::fromStdString(txn_id),
+ QString::fromStdString(res.event_id.to_string()));
+ });
+ } catch (const lmdb::error &e) {
+ nhlog::db()->critical(
+ "failed to save megolm outbound session: {}", e.what());
+ }
+ });
+
+ mtx::requests::QueryKeys req;
+ for (const auto &member : members)
+ req.device_keys[member] = {};
+
+ http::client()->query_keys(
+ req,
+ [keeper = std::move(keeper), megolm_payload, this](
+ const mtx::responses::QueryKeys &res, mtx::http::RequestErr err) {
+ if (err) {
+ nhlog::net()->warn("failed to query device keys: {} {}",
+ err->matrix_error.error,
+ static_cast<int>(err->status_code));
+ // TODO: Mark the event as failed. Communicate with the UI.
+ return;
+ }
+
+ for (const auto &user : res.device_keys) {
+ // Mapping from a device_id with valid identity keys to the
+ // generated room_key event used for sharing the megolm session.
+ std::map<std::string, std::string> room_key_msgs;
+ std::map<std::string, DevicePublicKeys> deviceKeys;
+
+ room_key_msgs.clear();
+ deviceKeys.clear();
+
+ for (const auto &dev : user.second) {
+ const auto user_id = ::UserId(dev.second.user_id);
+ const auto device_id = DeviceId(dev.second.device_id);
+
+ const auto device_keys = dev.second.keys;
+ const auto curveKey = "curve25519:" + device_id.get();
+ const auto edKey = "ed25519:" + device_id.get();
+
+ if ((device_keys.find(curveKey) == device_keys.end()) ||
+ (device_keys.find(edKey) == device_keys.end())) {
+ nhlog::net()->debug(
+ "ignoring malformed keys for device {}",
+ device_id.get());
+ continue;
+ }
+
+ DevicePublicKeys pks;
+ pks.ed25519 = device_keys.at(edKey);
+ pks.curve25519 = device_keys.at(curveKey);
+
+ try {
+ if (!mtx::crypto::verify_identity_signature(
+ json(dev.second), device_id, user_id)) {
+ nhlog::crypto()->warn(
+ "failed to verify identity keys: {}",
+ json(dev.second).dump(2));
+ continue;
+ }
+ } catch (const json::exception &e) {
+ nhlog::crypto()->warn(
+ "failed to parse device key json: {}",
+ e.what());
+ continue;
+ } catch (const mtx::crypto::olm_exception &e) {
+ nhlog::crypto()->warn(
+ "failed to verify device key json: {}",
+ e.what());
+ continue;
+ }
+
+ auto room_key = olm::client()
+ ->create_room_key_event(
+ user_id, pks.ed25519, megolm_payload)
+ .dump();
+
+ room_key_msgs.emplace(device_id, room_key);
+ deviceKeys.emplace(device_id, pks);
+ }
+
+ std::vector<std::string> valid_devices;
+ valid_devices.reserve(room_key_msgs.size());
+ for (auto const &d : room_key_msgs) {
+ valid_devices.push_back(d.first);
+
+ nhlog::net()->info("{}", d.first);
+ nhlog::net()->info(" curve25519 {}",
+ deviceKeys.at(d.first).curve25519);
+ nhlog::net()->info(" ed25519 {}",
+ deviceKeys.at(d.first).ed25519);
+ }
+
+ nhlog::net()->info(
+ "sending claim request for user {} with {} devices",
+ user.first,
+ valid_devices.size());
+
+ http::client()->claim_keys(
+ user.first,
+ valid_devices,
+ std::bind(&TimelineModel::handleClaimedKeys,
+ this,
+ keeper,
+ room_key_msgs,
+ deviceKeys,
+ user.first,
+ std::placeholders::_1,
+ std::placeholders::_2));
+
+ // TODO: Wait before sending the next batch of requests.
+ std::this_thread::sleep_for(std::chrono::milliseconds(500));
+ }
+ });
+
+ // TODO: Let the user know about the errors.
+ } catch (const lmdb::error &e) {
+ nhlog::db()->critical(
+ "failed to open outbound megolm session ({}): {}", room_id, e.what());
+ } catch (const mtx::crypto::olm_exception &e) {
+ nhlog::crypto()->critical(
+ "failed to open outbound megolm session ({}): {}", room_id, e.what());
+ }
+}
+
+void
+TimelineModel::handleClaimedKeys(std::shared_ptr<StateKeeper> keeper,
+ const std::map<std::string, std::string> &room_keys,
+ const std::map<std::string, DevicePublicKeys> &pks,
+ const std::string &user_id,
+ const mtx::responses::ClaimKeys &res,
+ mtx::http::RequestErr err)
+{
+ if (err) {
+ nhlog::net()->warn("claim keys error: {} {} {}",
+ err->matrix_error.error,
+ err->parse_error,
+ static_cast<int>(err->status_code));
+ return;
+ }
+
+ nhlog::net()->debug("claimed keys for {}", user_id);
+
+ if (res.one_time_keys.size() == 0) {
+ nhlog::net()->debug("no one-time keys found for user_id: {}", user_id);
+ return;
+ }
+
+ if (res.one_time_keys.find(user_id) == res.one_time_keys.end()) {
+ nhlog::net()->debug("no one-time keys found for user_id: {}", user_id);
+ return;
+ }
+
+ auto retrieved_devices = res.one_time_keys.at(user_id);
+
+ // Payload with all the to_device message to be sent.
+ json body;
+ body["messages"][user_id] = json::object();
+
+ for (const auto &rd : retrieved_devices) {
+ const auto device_id = rd.first;
+ nhlog::net()->debug("{} : \n {}", device_id, rd.second.dump(2));
+
+ // TODO: Verify signatures
+ auto otk = rd.second.begin()->at("key");
+
+ if (pks.find(device_id) == pks.end()) {
+ nhlog::net()->critical("couldn't find public key for device: {}",
+ device_id);
+ continue;
+ }
+
+ auto id_key = pks.at(device_id).curve25519;
+ auto s = olm::client()->create_outbound_session(id_key, otk);
+
+ if (room_keys.find(device_id) == room_keys.end()) {
+ nhlog::net()->critical("couldn't find m.room_key for device: {}",
+ device_id);
+ continue;
+ }
+
+ auto device_msg = olm::client()->create_olm_encrypted_content(
+ s.get(), room_keys.at(device_id), pks.at(device_id).curve25519);
+
+ try {
+ cache::client()->saveOlmSession(id_key, std::move(s));
+ } catch (const lmdb::error &e) {
+ nhlog::db()->critical("failed to save outbound olm session: {}", e.what());
+ } catch (const mtx::crypto::olm_exception &e) {
+ nhlog::crypto()->critical("failed to pickle outbound olm session: {}",
+ e.what());
+ }
+
+ body["messages"][user_id][device_id] = device_msg;
+ }
+
+ nhlog::net()->info("send_to_device: {}", user_id);
+
+ http::client()->send_to_device(
+ "m.room.encrypted", body, [keeper](mtx::http::RequestErr err) {
+ if (err) {
+ nhlog::net()->warn("failed to send "
+ "send_to_device "
+ "message: {}",
+ err->matrix_error.error);
+ }
+
+ (void)keeper;
+ });
+}
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