fix: add linux reconnection (#2415)

* fix: add linux reconnection

* fix: Dbus error, fix race conditional

* fix: improve reeconnection

* fix: add dns load/unload

* feat:  catch  state changed via  check gateway

* revert: restore linuxfirewall.cpp

* fix: restore reconnect time

* fix: add   NM_STATE_DISABLED and  check getGatewayAndIface more carefully

* fix: reconnect

* fix: revert wireguardutilslinux

* fix: revert

client/platforms/linux/daemon/linuxroutemonitor.cpp

@@ -164,8 +164,13 @@ bool LinuxRouteMonitor::rtmSendRoute(int action, int flags, int type,
     }
 
     if (rtm->rtm_type == RTN_THROW) {
+    QString gateway = NetworkUtilities::getGatewayAndIface().first;
+    if (gateway.isEmpty()) {
+        logger.warning() << "No default gateway available, skipping exclusion route";
+        return false;
+    }
     struct in_addr ip4;
-    inet_pton(AF_INET, NetworkUtilities::getGatewayAndIface().first.toUtf8(), &ip4);
+    inet_pton(AF_INET, gateway.toUtf8(), &ip4);
     nlmsg_append_attr(nlmsg, sizeof(buf), RTA_GATEWAY, &ip4, sizeof(ip4));
     nlmsg_append_attr32(nlmsg, sizeof(buf), RTA_PRIORITY, 0);
     rtm->rtm_type = RTN_UNICAST;

client/platforms/linux/linuxnetworkwatcher.cpp

@@ -44,6 +44,9 @@ void LinuxNetworkWatcher::initialize() {
   connect(m_worker, &LinuxNetworkWatcherWorker::wakeup, this,
           &NetworkWatcherImpl::wakeup);
 
+  connect(m_worker, &LinuxNetworkWatcherWorker::networkChanged, this,
+          [this]() { emit networkChanged(""); });
+
   // Let's wait a few seconds to allow the UI to be fully loaded and shown.
   // This is not strictly needed, but it's better for user experience because
   // it makes the UI faster to appear, plus it gives a bit of delay between the

client/platforms/linux/linuxnetworkwatcherworker.cpp

@@ -37,6 +37,7 @@
 enum NMState {
     NM_STATE_UNKNOWN = 0,
     NM_STATE_ASLEEP = 10,
+    NM_STATE_DISABLED = 10,
     NM_STATE_DISCONNECTED = 20,
     NM_STATE_DISCONNECTING = 30,
     NM_STATE_CONNECTING = 40,
@@ -199,10 +200,11 @@ void LinuxNetworkWatcherWorker::checkDevices() {
 
 void LinuxNetworkWatcherWorker::NMStateChanged(quint32 state)
 {
-  if (state == NM_STATE_ASLEEP) {
-    emit wakeup();
-  }
-
     logger.debug() << "NMStateChanged " << state;
-}
 
+    if (state == NM_STATE_ASLEEP || state == NM_STATE_DISABLED) {
+        emit wakeup();
+    } else if (state == NM_STATE_CONNECTED_GLOBAL) {
+        emit networkChanged();
+    }
+}

client/platforms/linux/linuxnetworkwatcherworker.h

@@ -24,6 +24,7 @@ class LinuxNetworkWatcherWorker final : public QObject {
  signals:
   void unsecuredNetwork(const QString& networkName, const QString& networkId);
   void wakeup();
+  void networkChanged();
 
  public slots:
   void initialize();