Windows: kill tor on exit

src/appcontext.cpp

@@ -169,7 +169,7 @@ AppContext::AppContext(QCommandLineParser *cmdargs) {
 }
 
 void AppContext::initTor() {
-    this->tor = new Tor(this);
+    this->tor = new Tor(this, this);
     this->tor->start();
 
     if (!(isTails || isWhonix)) {

src/mainwindow.cpp

@@ -932,6 +932,8 @@ void MainWindow::homeWidgetChanged(const QString &widgetName) {
 }
 
 void MainWindow::closeEvent(QCloseEvent *event) {
+    m_ctx->tor->stop();
+
     this->saveGeo();
     if(m_wizard != nullptr)
         m_wizard->close();

src/utils/tor.cpp

@@ -50,6 +50,13 @@ Tor::Tor(AppContext *ctx, QObject *parent)
         return;
     }
 
+    // Don't spawn Tor on default port to avoid conflicts
+    Tor::torPort = 19450;
+    if (Utils::portOpen(Tor::torHost, Tor::torPort)) {
+        this->localTor = true;
+        return;
+    }
+
     qDebug() << "Using embedded tor instance";
     m_process.setProcessChannelMode(QProcess::MergedChannels);
 
@@ -58,6 +65,10 @@ Tor::Tor(AppContext *ctx, QObject *parent)
     connect(&m_process, &QProcess::stateChanged, this, &Tor::stateChanged);
 }
 
+void Tor::stop() {
+    m_process.kill();
+}
+
 void Tor::start() {
     if (this->localTor) {
         this->checkConnection();
@@ -65,9 +76,6 @@ void Tor::start() {
         return;
     }
 
-    // Don't spawn Tor on default port to avoid conflicts
-    Tor::torPort = 19450;
-
     auto state = m_process.state();
     if (state == QProcess::ProcessState::Running || state == QProcess::ProcessState::Starting) {
         this->errorMsg = "Can't start Tor, already running or starting";
@@ -101,10 +109,6 @@ void Tor::start() {
     m_process.start(this->torPath, arguments);
 }
 
-void Tor::stop() {
-    m_process.terminate();
-}
-
 void Tor::checkConnection() {
     // We might not be able to connect to localhost if torsocks is used to start feather
     if (m_ctx->isTorSocks)