UI: Exit when can't open the driver device.

src/ui/driver/drivermanager.cpp

@@ -48,6 +48,11 @@ void DriverManager::setupWorker()
     m_workerThread->start();
 }
 
+bool DriverManager::isDeviceOpened() const
+{
+    return m_device->isOpened();
+}
+
 bool DriverManager::openDevice()
 {
     if (!m_device->open(FortCommon::deviceName())) {

src/ui/driver/drivermanager.h

@@ -21,6 +21,8 @@ public:
 
     QString errorMessage() const { return m_errorMessage; }
 
+    bool isDeviceOpened() const;
+
 signals:
     void errorMessageChanged();
 

src/ui/fortmanager.cpp

@@ -22,12 +22,13 @@
 #include "util/netutil.h"
 #include "util/osutil.h"
 
-FortManager::FortManager(QObject *parent) :
+FortManager::FortManager(FortSettings *fortSettings,
+                         QObject *parent) :
     QObject(parent),
     m_trayIcon(new QSystemTrayIcon(this)),
     m_engine(nullptr),
     m_appWindow(nullptr),
-    m_fortSettings(new FortSettings(qApp->arguments(), this)),
+    m_fortSettings(fortSettings),
     m_firewallConf(new FirewallConf(this)),
     m_firewallConfToEdit(nullConf()),
     m_driverManager(new DriverManager(this))
@@ -69,7 +70,7 @@ void FortManager::registerQmlTypes()
 bool FortManager::setupDriver()
 {
     if (!m_driverManager->openDevice()) {
-        showErrorBox(m_driverManager->errorMessage());
+        showErrorBox("Setup Driver: " + m_driverManager->errorMessage());
         return false;
     }
 
@@ -197,7 +198,7 @@ void FortManager::setFirewallConfToEdit(FirewallConf *conf)
 bool FortManager::loadSettings(FirewallConf *conf)
 {
     if (!m_fortSettings->readConf(*conf)) {
-        showErrorBox(m_fortSettings->errorMessage());
+        showErrorBox("Load Settings: " + m_fortSettings->errorMessage());
         return false;
     }
 
@@ -208,7 +209,7 @@ bool FortManager::saveSettings(FirewallConf *newConf, bool onlyFlags)
 {
     if (!(onlyFlags ? m_fortSettings->writeConfFlags(*newConf)
           : m_fortSettings->writeConf(*newConf))) {
-        showErrorBox(m_fortSettings->errorMessage());
+        showErrorBox("Save Settings: " + m_fortSettings->errorMessage());
         return false;
     }
 
@@ -223,9 +224,12 @@ bool FortManager::saveSettings(FirewallConf *newConf, bool onlyFlags)
 
 bool FortManager::updateDriverConf(FirewallConf *conf)
 {
+    if (!m_driverManager->isDeviceOpened())
+        return false;
+
     // Update driver
     if (!m_driverManager->writeConf(*conf)) {
-        showErrorBox(m_driverManager->errorMessage());
+        showErrorBox("Update Driver Conf: " + m_driverManager->errorMessage());
         return false;
     }
 
@@ -236,7 +240,7 @@ bool FortManager::updateDriverConfFlags(FirewallConf *conf)
 {
     // Update driver
     if (!m_driverManager->writeConfFlags(*conf)) {
-        showErrorBox(m_driverManager->errorMessage());
+        showErrorBox("Update Driver Conf Flags: " + m_driverManager->errorMessage());
         return false;
     }
 

src/ui/fortmanager.h

@@ -21,7 +21,8 @@ class FortManager : public QObject
     Q_PROPERTY(DriverManager *driverManager READ driverManager CONSTANT)
 
 public:
-    explicit FortManager(QObject *parent = nullptr);
+    explicit FortManager(FortSettings *fortSettings,
+                         QObject *parent = nullptr);
 
     FortSettings *fortSettings() const { return m_fortSettings; }
 

src/ui/fortsettings.cpp

@@ -97,6 +97,10 @@ bool FortSettings::readConf(FirewallConf &conf)
     const QString filePath = confFilePath();
     const QString backupFilePath = confBackupFilePath();
 
+    if (!(FileUtil::fileExists(filePath)
+          || FileUtil::fileExists(backupFilePath)))
+        return true;
+
     return tryToReadConf(conf, filePath)
             || tryToReadConf(conf, backupFilePath);
 }

src/ui/main.cpp

@@ -1,6 +1,7 @@
 #include <QApplication>
 
 #include "../common/version.h"
+#include "driver/drivermanager.h"
 #include "fortcommon.h"
 #include "fortmanager.h"
 #include "fortsettings.h"
@@ -14,14 +15,20 @@ int main(int argc, char *argv[])
     app.setApplicationVersion(APP_VERSION_STR);
     app.setApplicationDisplayName(APP_NAME " v" APP_VERSION_STR);
 
-    FortManager fortManager;
+    FortSettings fortSettings(qApp->arguments());
 
     // Register booted provider and exit
-    if (fortManager.fortSettings()->boot()) {
+    if (fortSettings.boot()) {
         FortCommon::provUnregister();
         return FortCommon::provRegister(true);
     }
 
+    FortManager fortManager(&fortSettings);
+
+    // Error: Cannot open the driver device
+    if (!fortManager.driverManager()->isDeviceOpened())
+        return 1;
+
     fortManager.showTrayIcon();
 
     return app.exec();

src/ui/util/device.cpp

@@ -15,6 +15,11 @@ Device::~Device()
     close();
 }
 
+bool Device::isOpened() const
+{
+    return (m_handle != INVALID_HANDLE_VALUE);
+}
+
 bool Device::open(const QString &filePath)
 {
     const DWORD access = GENERIC_READ | GENERIC_WRITE;

src/ui/util/device.h

@@ -11,6 +11,8 @@ public:
     explicit Device(QObject *parent = nullptr);
     virtual ~Device();
 
+    bool isOpened() const;
+
     static QString lastErrorMessage();
 
 signals: