Catch SIGINT signal.

Show pin, connection, disconnection and database messages if verbose
logging is disabled.

src/cli/headlessmanager.cpp

@@ -25,6 +25,7 @@
 
 #include <QCoreApplication>
 #include <QSettings>
+#include <QTextStream>
 #include <sys/socket.h>
 #include <unistd.h>
 #include <vitamtp.h>
@@ -59,6 +60,8 @@ void HeadlessManager::refreshDatabase()
         return;
     }
 
+    QTextStream(stdout) << "Database scan has started" << endl;
+
     if(!m_db->rescan()) {
         qDebug("No PS Vita system has been registered");
     }
@@ -128,6 +131,11 @@ void HeadlessManager::start()
     }
 }
 
+void HeadlessManager::receiveMessage(QString message)
+{
+    QTextStream(stdout) << message << endl;
+}
+
 void HeadlessManager::stop()
 {
     if(CmaClient::stop() < 0) {

src/cli/headlessmanager.h

@@ -70,6 +70,7 @@ public slots:
 
 private slots:
     void threadStopped();
+    void receiveMessage(QString message);
 };
 
 #endif // HEADLESSMANAGER_H

src/cli/main_cli.cpp

@@ -70,12 +70,18 @@ static bool setup_handlers()
         return false;
     }
 
+    if (sigaction(SIGINT, &term, NULL) != 0) {
+        qCritical("SIGINT signal handle failed");
+        return false;
+    }
+
     return true;
 }
 
 int main(int argc, char *argv[])
 {
-    if(SingleCoreApplication::sendMessage(QObject::tr("An instance of Qcma is already running"))) {
+    if(SingleCoreApplication::sendMessage("Another instance of Qcma tried to start")) {
+        QTextStream(stdout) << "An instance of Qcma is already running" << endl;
         return 0;
     }
 
@@ -137,6 +143,10 @@ int main(int argc, char *argv[])
     app.setApplicationName("qcma");
 
     HeadlessManager manager;
+
+    // receive the message from another process
+    QObject::connect(&app, SIGNAL(messageAvailable(QString)), &manager, SLOT(receiveMessage(QString)));
+
     manager.start();
 
     return app.exec();