ref(omemo): bundle separate, add db

qomemo/bundle.cpp

@@ -64,7 +64,9 @@ QXmppIq QXmpp::Omemo::Bundle::toIq(int deviceId) const {
   item.appendChild(toXml());
 
   auto publish = createElement("publish");
-  publish.setAttribute("node", QString("eu.siacs.conversations.axolotl.bundles:%s").arg(deviceId));
+  publish.setAttribute(
+      "node",
+      QString("eu.siacs.conversations.axolotl.bundles:%s").arg(deviceId));
   publish.appendChild(item);
 
   auto pubSub = createElement("pubsub", "http://jabber.org/protocol/pubsub");
@@ -116,7 +118,8 @@ void QXmpp::Omemo::Bundle::fromXml(const QXmppElement &element) {
 QXmppPubSubIq QXmpp::Omemo::Bundle::fetchDeviceBundleIq(int deviceId) {
   QXmppPubSubIq iq{};
   iq.setType(QXmppIq::Get);
-  iq.setQueryNode(QString("eu.siacs.conversations.axolotl.bundles:%1").arg(deviceId));
+  iq.setQueryNode(
+      QString("eu.siacs.conversations.axolotl.bundles:%1").arg(deviceId));
 
   QXmppPubSubItem item{};
   item.setId(QString::number(deviceId));

qomemo/bundle.h

@@ -38,4 +38,4 @@ public:
   QList<PreKey> prekeys;
 };
 
-}
+} // namespace QXmpp::Omemo

qomemo/database.cpp

@@ -0,0 +1,126 @@
+/*
+ * Created by victoria on 2021-05-13.
+ */
+
+#include "database.h"
+
+#include <QDebug>
+#include <QDir>
+#include <QException>
+#include <QStandardPaths>
+#include <QString>
+
+using namespace QXmpp::Omemo;
+
+Database::Database(QString jid) : jid(std::move(jid)) {
+  auto cacheLocation =
+      QStandardPaths::writableLocation(QStandardPaths::CacheLocation);
+  auto path = QString("%1/.omemo/%2").arg(cacheLocation, jid);
+  QDir cache(path);
+
+  if (!cache.exists() && !cache.mkpath(path)) {
+    qWarning() << "Could not create:" << path;
+    throw QException();
+  }
+
+  mdb_env_create(&env);
+
+  mdb_env_set_maxdbs(env, 5);
+  mdb_env_set_mapsize(env, 512UL * 1024UL * 1024UL);
+  mdb_env_open(env, path.toStdString().c_str(), 0, 0664);
+
+  MDB_txn *txn;
+  mdb_txn_begin(env, nullptr, 0, &txn);
+  mdb_dbi_open(txn, "keys", MDB_CREATE, &dbiKeys);
+  mdb_dbi_open(txn, "devices", MDB_CREATE, &dbiDevices);
+  mdb_dbi_open(txn, "identity_keys", MDB_CREATE, &dbiIdentityKeys);
+  mdb_txn_commit(txn);
+}
+
+Database::~Database() {
+  mdb_dbi_close(env, dbiKeys);
+  mdb_dbi_close(env, dbiDevices);
+  mdb_dbi_close(env, dbiIdentityKeys);
+  mdb_env_close(env);
+}
+
+QBuffer Database::loadIdentityKeySecret(int deviceId) { return QBuffer(); }
+
+bool Database::saveIdentityKeySecret(int deviceId,
+                                     const QBuffer &identityKeySecret) {
+  MDB_val mdbKey, mdbValue;
+  auto key = QString("%1/secret").arg(QString::number(deviceId)).toStdString();
+
+  mdbKey.mv_data = key.data();
+  mdbKey.mv_size = key.size();
+
+  mdbValue.mv_data = const_cast<char *>(identityKeySecret.data().data());
+  mdbValue.mv_size = identityKeySecret.size();
+
+  MDB_txn *txn;
+  mdb_txn_begin(env, nullptr, 0, &txn);
+  auto err = mdb_put(txn, dbiIdentityKeys, &mdbKey, &mdbValue, MDB_NOOVERWRITE);
+  if (!err) {
+    mdb_txn_commit(txn);
+    return true;
+  }
+
+  qWarning() << "could not save identity key secret:" << mdb_strerror(err);
+  mdb_txn_abort(txn);
+
+  return false;
+}
+
+int Database::loadActiveDeviceId() {
+  MDB_val key, value;
+
+  key.mv_data = (void *)"active";
+  key.mv_size = sizeof("active");
+
+  MDB_txn *txn;
+  mdb_txn_begin(env, nullptr, 0, &txn);
+
+  auto err = mdb_get(txn, dbiIdentityKeys, &key, &value);
+  if (err) {
+    qWarning() << "could not load active device id:" << mdb_strerror(err);
+    return 0;
+  }
+
+  if (value.mv_size != sizeof(int)) {
+    qWarning() << "mv_size is" << value.mv_size << "instead of" << sizeof(int);
+    return 0;
+  }
+
+  auto id = *reinterpret_cast<int *>(value.mv_data);
+
+  mdb_txn_abort(txn);
+
+  return id;
+}
+
+bool Database::saveActiveDeviceId(int deviceId) {
+  MDB_val key, value;
+
+  key.mv_data = (void *)"active";
+  key.mv_size = sizeof("active");
+
+  value.mv_data = &deviceId;
+  value.mv_size = sizeof(deviceId);
+
+  MDB_txn *txn;
+  mdb_txn_begin(env, nullptr, 0, &txn);
+
+  auto err = mdb_put(txn, dbiIdentityKeys, &key, &value, 0);
+  if (err) {
+    qWarning() << "could not save active device id" << mdb_strerror(err);
+    return false;
+  }
+
+  err = mdb_txn_commit(txn);
+  if (err) {
+    qWarning() << "could not save active device id" << mdb_strerror(err);
+    return false;
+  }
+
+  return true;
+}

qomemo/database.h

@@ -0,0 +1,40 @@
+/*
+ * Created by victoria on 2021-05-13.
+ */
+
+#pragma once
+
+#include <QBuffer>
+#include <QString>
+#include <lmdb.h>
+
+namespace QXmpp::Omemo {
+
+class Database {
+public:
+  explicit Database(QString jid);
+  ~Database();
+  Database(const Database &) = delete;
+  Database(Database &&) = delete;
+  Database &operator=(const Database &) = delete;
+
+  QBuffer loadIdentityKey();
+  bool saveIdentityKey(const QBuffer &identityKey);
+
+  int loadActiveDeviceId();
+  bool saveActiveDeviceId(int deviceId);
+
+  QBuffer loadIdentityKeySecret(int deviceId);
+  bool saveIdentityKeySecret(int deviceId, const QBuffer &identityKeySecret);
+
+  const QString jid;
+
+private:
+  MDB_env *env{};
+  MDB_dbi dbiDevices{};
+  MDB_dbi dbiKeys{};
+  MDB_dbi dbiPreKeys{};
+  MDB_dbi dbiIdentityKeys{};
+};
+
+} // namespace QXmpp::Omemo

qomemo/qxmpp_omemo_manager.cpp

@@ -15,8 +15,11 @@
 
 using namespace QXmpp::Omemo;
 
-Manager::Manager() : deviceService(new DeviceService(this)), omemoVariant(new Variant::Conversations) {
-  connect(this, &Manager::deviceListReceived, deviceService.get(), &DeviceService::onDeviceListReceived);
+Manager::Manager()
+    : deviceService(new DeviceService(this)),
+      omemoVariant(new Variant::Conversations) {
+  connect(this, &Manager::deviceListReceived, deviceService.get(),
+          &DeviceService::onDeviceListReceived);
 }
 
 bool QXmpp::Omemo::Manager::handleStanza(const QDomElement &stanza) {
@@ -31,7 +34,8 @@ bool QXmpp::Omemo::Manager::handleStanza(const QDomElement &stanza) {
       auto pubsub = stanza.firstChildElement("pubsub");
       if (!pubsub.isNull()) {
         auto items = pubsub.firstChildElement("items");
-        if (items.attribute("node") == "eu.siacs.conversations.axolotl.devicelist") {
+        if (items.attribute("node") ==
+            "eu.siacs.conversations.axolotl.devicelist") {
           auto item = items.firstChildElement("item");
           if (!item.isNull()) {
             auto list = item.firstChildElement("list");
@@ -56,7 +60,8 @@ void QXmpp::Omemo::Manager::setClient(QXmppClient *client) {
   if (!client)
     return;
 
-  QObject::connect(client, &QXmppClient::connected, this, &Manager::fetchOwnDevices);
+  QObject::connect(client, &QXmppClient::connected, this,
+                   &Manager::fetchOwnDevices);
 }
 
 void QXmpp::Omemo::Manager::fetchOwnDevices() {

qomemo/sce.h

@@ -4,8 +4,8 @@
 
 #pragma once
 
-#include <QXmppElement.h>
 #include <QDateTime>
+#include <QXmppElement.h>
 
 namespace QXmpp::Sce {
 

qomemo/user_device_list.h

@@ -5,6 +5,7 @@
 #pragma once
 
 #include <QString>
+
 namespace QXmpp::Omemo {
 
 class UserDeviceList {