feat(OMEMO): QXmppClientExtension for OMEMO

core/account.cpp

@@ -47,7 +47,8 @@ Account::Account(const QString& p_login, const QString& p_server, const QString&
     network(p_net),
     passwordType(Shared::AccountPassword::plain),
     mh(new MessageHandler(this)),
-    rh(new RosterHandler(this))
+    rh(new RosterHandler(this)),
+    omemo(new QXmpp::Omemo::Manager())
 {
     config.setUser(p_login);
     config.setDomain(p_server);
@@ -91,6 +92,7 @@ Account::Account(const QString& p_login, const QString& p_server, const QString&
     client.addExtension(rcpm);
     QObject::connect(rcpm, &QXmppMessageReceiptManager::messageDelivered, mh, &MessageHandler::onReceiptReceived);
 
+    client.addExtension(omemo.get());
     
     QString path(QStandardPaths::writableLocation(QStandardPaths::CacheLocation));
     path += "/" + name;

core/account.h

@@ -30,23 +30,24 @@
 #include <map>
 #include <set>
 
-#include <QXmppRosterManager.h>
-#include <QXmppCarbonManager.h>
-#include <QXmppDiscoveryManager.h>
-#include <QXmppMamManager.h>
-#include <QXmppMucManager.h>
-#include <QXmppClient.h>
 #include <QXmppBookmarkManager.h>
 #include <QXmppBookmarkSet.h>
+#include <QXmppCarbonManager.h>
+#include <QXmppClient.h>
+#include <QXmppDiscoveryManager.h>
+#include <QXmppMamManager.h>
+#include <QXmppMessageReceiptManager.h>
+#include <QXmppMucManager.h>
+#include <QXmppRosterManager.h>
 #include <QXmppUploadRequestManager.h>
 #include <QXmppVCardIq.h>
 #include <QXmppVCardManager.h>
-#include <QXmppMessageReceiptManager.h>
+#include <qomemo/qxmpp_omemo_manager.h>
 
-#include "shared/shared.h"
-#include "contact.h"
 #include "conference.h"
+#include "contact.h"
 #include "networkaccess.h"
+#include "shared/shared.h"
 
 #include "handlers/messagehandler.h"
 #include "handlers/rosterhandler.h"
@@ -166,6 +167,8 @@ private:
     MessageHandler* mh;
     RosterHandler* rh;
 
+    QScopedPointer<QXmpp::Omemo::Manager> omemo;
+    
 private slots:
     void onClientStateChange(QXmppClient::State state);
     void onClientError(QXmppClient::Error err);

qomemo/CMakeLists.txt

@@ -11,4 +11,6 @@ target_sources(squawk PRIVATE
   sce.h
   user_device_list.cpp
   user_device_list.h
+  qxmpp_omemo_manager.cpp
+  qxmpp_omemo_manager.h
   )

qomemo/device_service.cpp

@@ -4,27 +4,12 @@
 
 #include "device_service.h"
 
-#include <QXmppClient.h>
+QXmpp::Omemo::DeviceService::DeviceService(QObject *parent) : QObject(parent) {}
-#include <QXmppPubSubIq.h>
 
-#include <QDebug>
+void QXmpp::Omemo::DeviceService::onDeviceListReceived(
+    const QString &jid, const QXmpp::Omemo::DeviceList &list) {
 
-QXmpp::Omemo::DeviceService::DeviceService(QXmppClient &client, QObject *parent)
+  for (const auto &device : list.devices) {
-    : QObject(parent), client(client) {
+    qInfo() << "Got device for" << jid << ":" << device.id;
-  connect(&client, &QXmppClient::iqReceived, this,
-          &DeviceService::onIqReceived);
   }
-
-void QXmpp::Omemo::DeviceService::onIqReceived(const QXmppIq &iq) {
-  // Update OMEMO device list
-}
-
-void QXmpp::Omemo::DeviceService::fetch() {
-  QXmppPubSubIq fetchOwnDevices{};
-  fetchOwnDevices.setFrom(client.configuration().jid());
-  fetchOwnDevices.setTo(client.configuration().jidBare());
-  fetchOwnDevices.setType(QXmppIq::Get);
-  fetchOwnDevices.setQueryNode("urn:xmpp:omemo:1:devices");
-
-  client.sendPacket(fetchOwnDevices);
 }

qomemo/device_service.h

@@ -4,6 +4,7 @@
 
 #pragma once
 
+#include "qomemo.h"
 #include "user_device_list.h"
 
 #include <QXmppClient.h>
@@ -14,17 +15,12 @@ class DeviceService : public QObject {
   Q_OBJECT
 
 public:
-  DeviceService(QXmppClient& client, QObject *parent);
+  explicit DeviceService(QObject *parent);
-
-  void fetch();
 
 public slots:
-  void onIqReceived(const QXmppIq& iq);
+  void onDeviceListReceived(const QString& jid, const DeviceList& list);
 
 private:
-  void announce();
-
-  QXmppClient& client;
   QMap<QString, UserDeviceList> device_lists{};
 };
 

qomemo/qomemo.cpp

@@ -13,7 +13,7 @@
 using namespace QXmpp::Factories;
 
 QXmppElement QXmpp::Omemo::DeviceList::toXml() const {
-  auto element = createElement("devices", "urn:xmpp:omemo:1");
+  auto element = createElement("list", "eu.siacs.conversations.axolotl");
 
   for (const auto &d : devices) {
     element.appendChild(d.toXml());
@@ -28,11 +28,10 @@ QXmppIq QXmpp::Omemo::DeviceList::toIq() const {
   iq.setType(QXmppIq::Set);
 
   auto item = createElement("item");
-  item.setAttribute("id", "current");
   item.appendChild(toXml());
 
   auto publish = createElement("publish");
-  publish.setAttribute("node", "urn:xmpp:omemo:1:devices");
+  publish.setAttribute("node", "eu.siacs.conversations.axolotl.devicelist");
   publish.appendChild(item);
 
   auto pubSub = createElement("pubsub", "http://jabber.org/protocol/pubsub");
@@ -45,7 +44,7 @@ QXmppIq QXmpp::Omemo::DeviceList::toIq() const {
 }
 
 void QXmpp::Omemo::DeviceList::fromXml(const QXmppElement &element) {
-  if (!elementMatches(element, "devices", "urn:xmpp:omemo:1"))
+  if (!elementMatches(element, "list", "eu.siacs.conversations.axolotl"))
     return;
 
   devices.clear();
@@ -64,10 +63,6 @@ QXmppElement QXmpp::Omemo::Device::toXml() const {
   auto result = createElement("device");
   result.setAttribute("id", QString::number(id));
 
-  if (!label.isEmpty()) {
-    result.setAttribute("label", label);
-  }
-
   return result;
 }
 
@@ -76,12 +71,11 @@ void QXmpp::Omemo::Device::fromXml(const QXmppElement &element) {
     return;
 
   id = element.attribute("id").toInt();
-  label = element.attribute("label");
 }
 
 QXmppElement QXmpp::Omemo::PreKey::toXml() const {
-  auto pk = createElement("pk");
+  auto pk = createElement("preKeyPublic");
-  pk.setAttribute("id", QString::number(id));
+  pk.setAttribute("preKeyId", QString::number(id));
   // TODO: Base64
   pk.setValue(data);
 
@@ -89,23 +83,23 @@ QXmppElement QXmpp::Omemo::PreKey::toXml() const {
 }
 
 void QXmpp::Omemo::PreKey::fromXml(const QXmppElement &element) {
-  if (!elementMatches(element, "pk"))
+  if (!elementMatches(element, "preKeyPublic"))
     return;
 
-  id = element.attribute("id").toInt();
+  id = element.attribute("preKeyId").toInt();
   // TODO: Base64
   data = element.value();
 }
 
 QXmppElement QXmpp::Omemo::Bundle::toXml() const {
-  auto spkNode = createElement("spk");
+  auto spkNode = createElement("signedPreKeyPublic");
-  spkNode.setAttribute("id", QString::number(spkId));
+  spkNode.setAttribute("signedPreKeyId", QString::number(spkId));
   spkNode.setValue(spk);
 
-  auto spksNode = createElement("spks");
+  auto spksNode = createElement("signedPreKeySignature");
   spksNode.setValue(spks);
 
-  auto ikNode = createElement("ik");
+  auto ikNode = createElement("identityKey");
   ikNode.setValue(ik);
 
   auto prekeysNode = createElement("prekeys");
@@ -113,7 +107,7 @@ QXmppElement QXmpp::Omemo::Bundle::toXml() const {
     prekeysNode.appendChild(pk.toXml());
   }
 
-  auto result = createElement("bundle", "urn:xmpp:omemo:1");
+  auto result = createElement("bundle", "eu.siacs.conversations.axolotl");
   result.appendChild(spkNode);
   result.appendChild(spksNode);
   result.appendChild(ikNode);
@@ -122,22 +116,21 @@ QXmppElement QXmpp::Omemo::Bundle::toXml() const {
   return result;
 }
 
-QXmppIq QXmpp::Omemo::Bundle::toIq() const {
+QXmppIq QXmpp::Omemo::Bundle::toIq(int deviceId) const {
   QXmppIq iq{};
 
   iq.setType(QXmppIq::Set);
 
   auto item = createElement("item");
-  item.setAttribute("id", QString::number(deviceId));
   item.appendChild(toXml());
 
   auto publish = createElement("publish");
-  publish.setAttribute("node", "urn:xmpp:omemo:1:bundles");
+  publish.setAttribute("node", QString("eu.siacs.conversations.axolotl.bundles:%s").arg(deviceId));
   publish.appendChild(item);
 
   auto pubSub = createElement("pubsub", "http://jabber.org/protocol/pubsub");
   pubSub.appendChild(publish);
-  pubSub.appendChild(createOpenPublishOptions("max"));
+  pubSub.appendChild(createOpenPublishOptions());
 
   iq.extensions().push_back(pubSub);
 
@@ -145,7 +138,7 @@ QXmppIq QXmpp::Omemo::Bundle::toIq() const {
 }
 
 void QXmpp::Omemo::Bundle::fromXml(const QXmppElement &element) {
-  if (!elementMatches(element, "bundle", "urn:xmpp:omemo:1"))
+  if (!elementMatches(element, "bundle", "eu.siacs.conversations.axolotl"))
     return;
 
   auto spkNode = element.firstChildElement("spk");
@@ -184,7 +177,7 @@ void QXmpp::Omemo::Bundle::fromXml(const QXmppElement &element) {
 QXmppPubSubIq QXmpp::Omemo::Bundle::fetchDeviceBundleIq(int deviceId) {
   QXmppPubSubIq iq{};
   iq.setType(QXmppIq::Get);
-  iq.setQueryNode("urn:xmpp:omemo:1:bundles");
+  iq.setQueryNode(QString("eu.siacs.conversations.axolotl.bundles:%1").arg(deviceId));
 
   QXmppPubSubItem item{};
   item.setId(QString::number(deviceId));
@@ -197,13 +190,8 @@ QXmppElement QXmpp::Omemo::EncryptedMessage::header() const {
   auto result = createElement("header");
   result.setAttribute("sid", QString::number(fromDeviceId));
 
-  return result;
+  auto ivNode = createElement("iv");
-}
+  ivNode.setValue(iv);
-
-QXmppElement QXmpp::Omemo::EncryptedMessage::toXml() const {
-  auto result = createElement("encrypted", "urn:xmpp:omemo:1");
-
-  result.appendChild(header());
 
   for (const auto &key : keys) {
     result.appendChild(key.toXml());
@@ -212,6 +200,16 @@ QXmppElement QXmpp::Omemo::EncryptedMessage::toXml() const {
   return result;
 }
 
+QXmppElement QXmpp::Omemo::EncryptedMessage::toXml() const {
+  auto result = createElement("encrypted", "eu.siacs.conversations.axolotl");
+
+  result.appendChild(header());
+  // TODO: Payload is optional
+  result.appendChild(payload());
+
+  return result;
+}
+
 QXmppElement QXmpp::Omemo::EncryptedMessage::payload() const {
   QBuffer buffer;
   buffer.open(QIODevice::ReadWrite);
@@ -260,21 +258,11 @@ QXmppElement QXmpp::Omemo::EncryptedMessage::content() const {
 QXmppElement QXmpp::Omemo::MessageKey::toXml() const {
   auto result = createElement("key");
 
-  if (kex)
+  result.setAttribute("rid", QString::number(receivingDeviceId));
-    result.setAttribute("kex", "true");
+  if (prekey)
+    result.setAttribute("prekey", "true");
 
   result.setValue(key);
 
   return result;
 }
-
-QXmppElement QXmpp::Omemo::HeaderKeys::toXml() const {
-  auto result = createElement("keys");
-  result.setAttribute("jid", jid);
-
-  for (const auto &key : keys) {
-    result.appendChild(key.toXml());
-  }
-
-  return result;
-}

qomemo/qomemo.h

@@ -17,7 +17,6 @@ public:
   void fromXml(const QXmppElement &element);
 
   int id;
-  QString label;
 };
 
 class DeviceList {
@@ -27,7 +26,6 @@ public:
   /// Expects a urn:xmpp:omemo:1:devices node
   void fromXml(const QXmppElement &element);
 
-private:
   QList<Device> devices;
 };
 
@@ -46,11 +44,9 @@ public:
   [[nodiscard]] static QXmppPubSubIq fetchDeviceBundleIq(int deviceId);
 
   [[nodiscard]] QXmppElement toXml() const;
-  [[nodiscard]] QXmppIq toIq() const;
+  [[nodiscard]] QXmppIq toIq(int deviceId) const;
   void fromXml(const QXmppElement &element);
 
-  int deviceId;
-
   QString spk;
   int spkId;
   QString spks;
@@ -62,18 +58,11 @@ class MessageKey {
 public:
   [[nodiscard]] QXmppElement toXml() const;
 
-  bool kex{};
+  int receivingDeviceId{};
+  bool prekey{};
   QString key{};
 };
 
-class HeaderKeys {
-public:
-  [[nodiscard]] QXmppElement toXml() const;
-
-  QString jid{};
-  QList<MessageKey> keys{};
-};
-
 class EncryptedMessage {
 public:
   [[nodiscard]] QXmppElement header() const;
@@ -83,11 +72,13 @@ public:
 
   int fromDeviceId{};
 
-  QList<HeaderKeys> keys{};
+  QList<MessageKey> keys{};
   QString from{};
   QString to{};
   QDateTime timestamp{};
 
+  QString iv{};
+
   QXmppMessage message{};
 };
 

qomemo/qxmpp_omemo_manager.cpp

@@ -0,0 +1,66 @@
+/*
+ * Created by victoria on 2021-05-12.
+ */
+
+#include "qxmpp_omemo_manager.h"
+
+#include <QDomElement>
+
+#include <QXmppClient.h>
+#include <QXmppPubSubIq.h>
+#include <iostream>
+
+QXmpp::Omemo::Manager::Manager() : deviceService(new QXmpp::Omemo::DeviceService(this)) {
+  connect(this, &Manager::deviceListReceived, deviceService.get(), &DeviceService::onDeviceListReceived);
+}
+
+bool QXmpp::Omemo::Manager::handleStanza(const QDomElement &stanza) {
+  QString str{};
+  QTextStream info(&str);
+  stanza.save(info, 4);
+
+  std::cout << str.toStdString();
+
+  if (stanza.tagName() == "iq") {
+    if (stanza.attribute("type") == "result") {
+      auto pubsub = stanza.firstChildElement("pubsub");
+      if (!pubsub.isNull()) {
+        auto items = pubsub.firstChildElement("items");
+        if (items.attribute("node") == "eu.siacs.conversations.axolotl.devicelist") {
+          auto item = items.firstChildElement("item");
+          if (!item.isNull()) {
+            auto list = item.firstChildElement("list");
+            if (!list.isNull()) {
+              DeviceList deviceList{};
+              deviceList.fromXml(list);
+              emit deviceListReceived(stanza.attribute("from"), deviceList);
+
+              return true;
+            }
+          }
+        }
+      }
+    }
+  }
+
+  return false;
+}
+
+void QXmpp::Omemo::Manager::setClient(QXmppClient *client) {
+  QXmppClientExtension::setClient(client);
+
+  if (!client)
+    return;
+
+  QObject::connect(client, &QXmppClient::connected, this, &Manager::fetchOwnDevices);
+}
+
+void QXmpp::Omemo::Manager::fetchOwnDevices() {
+  QXmppPubSubIq iq{};
+  iq.setFrom(client()->configuration().jid());
+  iq.setTo(client()->configuration().jidBare());
+  iq.setType(QXmppIq::Get);
+  iq.setQueryNode("eu.siacs.conversations.axolotl.devicelist");
+
+  client()->sendPacket(iq);
+}

qomemo/qxmpp_omemo_manager.h

@@ -0,0 +1,36 @@
+/*
+ * Created by victoria on 2021-05-12.
+ */
+
+#pragma once
+
+#include "device_service.h"
+#include "qomemo.h"
+
+#include <QXmppClientExtension.h>
+
+namespace QXmpp::Omemo {
+
+class Manager : public QXmppClientExtension {
+  Q_OBJECT;
+
+public:
+  Manager();
+  ~Manager() override = default;
+
+  bool handleStanza(const QDomElement &stanza) override;
+
+public slots:
+  void fetchOwnDevices();
+
+signals:
+  void deviceListReceived(const QString& jid, const DeviceList& list);
+
+protected:
+  void setClient(QXmppClient *client) override;
+
+private:
+  QScopedPointer<DeviceService> deviceService;
+};
+
+} // namespace QXmpp::Omemo