C2: display ip address in network panel (commaai#23215)

* display ipv4 address

* refactor to class

* only display ip address

selfdrive/ui/qt/offroad/settings.cc

@@ -286,33 +286,57 @@ void SoftwarePanel::updateLabels() {
   osVersionLbl->setText(QString::fromStdString(Hardware::get_os_version()).trimmed());
 }
 
-QWidget * network_panel(QWidget * parent) {
-#ifdef QCOM
-  QWidget *w = new QWidget(parent);
-  QVBoxLayout *layout = new QVBoxLayout(w);
+C2NetworkPanel::C2NetworkPanel(QWidget *parent) : QWidget(parent) {
+  QVBoxLayout *layout = new QVBoxLayout(this);
   layout->setContentsMargins(50, 0, 50, 0);
 
   ListWidget *list = new ListWidget();
   list->setSpacing(30);
   // wifi + tethering buttons
+#ifdef QCOM
   auto wifiBtn = new ButtonControl("Wi-Fi Settings", "OPEN");
   QObject::connect(wifiBtn, &ButtonControl::clicked, [=]() { HardwareEon::launch_wifi(); });
   list->addItem(wifiBtn);
 
   auto tetheringBtn = new ButtonControl("Tethering Settings", "OPEN");
   QObject::connect(tetheringBtn, &ButtonControl::clicked, [=]() { HardwareEon::launch_tethering(); });
   list->addItem(tetheringBtn);
+#endif
+  ipaddress = new LabelControl("IP Address", "");
+  list->addItem(ipaddress);
 
   // SSH key management
   list->addItem(new SshToggle());
   list->addItem(new SshControl());
-
   layout->addWidget(list);
   layout->addStretch(1);
+}
+
+void C2NetworkPanel::showEvent(QShowEvent *event) {
+  ipaddress->setText(getIPAddress());
+}
+
+QString C2NetworkPanel::getIPAddress() {
+  std::string result = util::check_output("ifconfig wlan0");
+  if (result.empty()) return "";
+
+  const std::string inetaddrr = "inet addr:";
+  std::string::size_type begin = result.find(inetaddrr);
+  if (begin == std::string::npos) return "";
+
+  begin += inetaddrr.length();
+  std::string::size_type end = result.find(' ', begin);
+  if (end == std::string::npos) return "";
+
+  return result.substr(begin, end - begin).c_str();
+}
+
+QWidget *network_panel(QWidget *parent) {
+#ifdef QCOM
+  return new C2NetworkPanel(parent);
 #else
-  Networking *w = new Networking(parent);
+  return new Networking(parent);
 #endif
-  return w;
 }
 
 void SettingsWindow::showEvent(QShowEvent *event) {

selfdrive/ui/qt/offroad/settings.h

@@ -77,3 +77,14 @@ class SoftwarePanel : public ListWidget {
   Params params;
   QFileSystemWatcher *fs_watch;
 };
+
+class C2NetworkPanel: public QWidget {
+  Q_OBJECT
+public:
+  explicit C2NetworkPanel(QWidget* parent = nullptr);
+
+private:
+  void showEvent(QShowEvent *event) override;
+  QString getIPAddress();
+  LabelControl *ipaddress;
+};