diff --git a/src/encryption/VerificationManager.cpp b/src/encryption/VerificationManager.cpp
new file mode 100644
index 00000000..f4c7ddf2
--- /dev/null
+++ b/src/encryption/VerificationManager.cpp
@@ -0,0 +1,135 @@
+// SPDX-FileCopyrightText: 2021 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "VerificationManager.h"
+#include "Cache.h"
+#include "ChatPage.h"
+#include "DeviceVerificationFlow.h"
+#include "timeline/TimelineViewManager.h"
+
+VerificationManager::VerificationManager(TimelineViewManager *o)
+ : QObject(o)
+ , rooms_(o->rooms())
+{}
+
+void
+VerificationManager::receivedRoomDeviceVerificationRequest(
+ const mtx::events::RoomEvent<mtx::events::msg::KeyVerificationRequest> &message,
+ TimelineModel *model)
+{
+ if (this->isInitialSync_)
+ return;
+
+ auto event_id = QString::fromStdString(message.event_id);
+ if (!this->dvList.contains(event_id)) {
+ if (auto flow = DeviceVerificationFlow::NewInRoomVerification(
+ this, model, message.content, QString::fromStdString(message.sender), event_id)) {
+ dvList[event_id] = flow;
+ emit newDeviceVerificationRequest(flow.data());
+ }
+ }
+}
+
+void
+VerificationManager::receivedDeviceVerificationRequest(
+ const mtx::events::msg::KeyVerificationRequest &msg,
+ std::string sender)
+{
+ if (this->isInitialSync_)
+ return;
+
+ if (!msg.transaction_id)
+ return;
+
+ auto txnid = QString::fromStdString(msg.transaction_id.value());
+ if (!this->dvList.contains(txnid)) {
+ if (auto flow = DeviceVerificationFlow::NewToDeviceVerification(
+ this, msg, QString::fromStdString(sender), txnid)) {
+ dvList[txnid] = flow;
+ emit newDeviceVerificationRequest(flow.data());
+ }
+ }
+}
+
+void
+VerificationManager::receivedDeviceVerificationStart(
+ const mtx::events::msg::KeyVerificationStart &msg,
+ std::string sender)
+{
+ if (this->isInitialSync_)
+ return;
+
+ if (!msg.transaction_id)
+ return;
+
+ auto txnid = QString::fromStdString(msg.transaction_id.value());
+ if (!this->dvList.contains(txnid)) {
+ if (auto flow = DeviceVerificationFlow::NewToDeviceVerification(
+ this, msg, QString::fromStdString(sender), txnid)) {
+ dvList[txnid] = flow;
+ emit newDeviceVerificationRequest(flow.data());
+ }
+ }
+}
+
+void
+VerificationManager::verifyUser(QString userid)
+{
+ auto joined_rooms = cache::joinedRooms();
+ auto room_infos = cache::getRoomInfo(joined_rooms);
+
+ for (std::string room_id : joined_rooms) {
+ if ((room_infos[QString::fromStdString(room_id)].member_count == 2) &&
+ cache::isRoomEncrypted(room_id)) {
+ auto room_members = cache::roomMembers(room_id);
+ if (std::find(room_members.begin(), room_members.end(), (userid).toStdString()) !=
+ room_members.end()) {
+ if (auto model = rooms_->getRoomById(QString::fromStdString(room_id))) {
+ auto flow =
+ DeviceVerificationFlow::InitiateUserVerification(this, model.data(), userid);
+ connect(model.data(),
+ &TimelineModel::updateFlowEventId,
+ this,
+ [this, flow](std::string eventId) {
+ dvList[QString::fromStdString(eventId)] = flow;
+ });
+ emit newDeviceVerificationRequest(flow.data());
+ return;
+ }
+ }
+ }
+ }
+
+ emit ChatPage::instance()->showNotification(
+ tr("No encrypted private chat found with this user. Create an "
+ "encrypted private chat with this user and try again."));
+}
+
+void
+VerificationManager::removeVerificationFlow(DeviceVerificationFlow *flow)
+{
+ for (auto it = dvList.keyValueBegin(); it != dvList.keyValueEnd(); ++it) {
+ if ((*it).second == flow) {
+ dvList.remove((*it).first);
+ return;
+ }
+ }
+}
+
+void
+VerificationManager::verifyDevice(QString userid, QString deviceid)
+{
+ auto flow = DeviceVerificationFlow::InitiateDeviceVerification(this, userid, {deviceid});
+ this->dvList[flow->transactionId()] = flow;
+ emit newDeviceVerificationRequest(flow.data());
+}
+
+void
+VerificationManager::verifyOneOfDevices(QString userid, std::vector<QString> deviceids)
+{
+ auto flow =
+ DeviceVerificationFlow::InitiateDeviceVerification(this, userid, std::move(deviceids));
+ this->dvList[flow->transactionId()] = flow;
+ emit newDeviceVerificationRequest(flow.data());
+}
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