refactor: main.cpp refactor, fixed a crash

makespec/BUILDVERSION

@@ -1 +1 @@
-5579
+5580

src/Qv2rayApplication.cpp

@@ -168,32 +168,30 @@ namespace Qv2ray
     bool Qv2rayApplication::CheckSettingsPathAvailability(const QString &_path, bool checkExistingConfig)
     {
         auto path = _path;
+
         if (!path.endsWith("/"))
-        {
             path.append("/");
-        }
+
         // Does not exist.
         if (!QDir(path).exists())
             return false;
 
+        {
             // A temp file used to test file permissions in that folder.
-        QFile testFile(path + ".qv2ray_file_write_test_file" + QSTRN(QTime::currentTime().msecsSinceStartOfDay()));
+            QFile testFile(path + ".qv2ray_test_file" + QSTRN(QTime::currentTime().msecsSinceStartOfDay()));
-        bool opened = testFile.open(QFile::OpenModeFlag::ReadWrite);
 
-        if (!opened)
+            if (!testFile.open(QFile::OpenModeFlag::ReadWrite))
             {
                 LOG(MODULE_SETTINGS, "Directory at: " + path + " cannot be used as a valid config file path.")
                 LOG(MODULE_SETTINGS, "---> Cannot create a new file or open a file for writing.")
                 return false;
             }
-        else
+
-        {
             testFile.write("Qv2ray test file, feel free to remove.");
             testFile.flush();
             testFile.close();
-            bool removed = testFile.remove();
 
-            if (!removed)
+            if (!testFile.remove())
             {
                 // This is rare, as we can create a file but failed to remove it.
                 LOG(MODULE_SETTINGS, "Directory at: " + path + " cannot be used as a valid config file path.")
@@ -202,8 +200,12 @@ namespace Qv2ray
             }
         }
 
-        if (checkExistingConfig)
+        if (!checkExistingConfig)
         {
+            // Just pass the test
+            return true;
+        }
+
         // Check if an existing config is found.
         QFile configFile(path + "Qv2ray.conf");
 
@@ -211,63 +213,33 @@ namespace Qv2ray
         if (!configFile.exists())
             return false;
 
-            bool opened2 = configFile.open(QIODevice::ReadWrite);
+        if (!configFile.open(QIODevice::ReadWrite))
-
-            try
         {
-                if (opened2)
+            LOG(MODULE_SETTINGS, "File: " + configFile.fileName() + " cannot be opened!")
-                {
+            return false;
-                    // Verify if the config can be loaded.
+        }
-                    // Failed to parse if we changed the file structure...
-                    // Original:
-                    //  --  auto conf =
-                    //  StructFromJsonString<Qv2rayConfig>(configFile.readAll());
-                    //
-                    // Verify JSON file format. (only) because this file version may
-                    // not be upgraded and may contain unsupported structure.
-                    auto err = VerifyJsonString(StringFromFile(configFile));
 
+        const auto err = VerifyJsonString(StringFromFile(configFile));
         if (!err.isEmpty())
         {
             LOG(MODULE_INIT, "Json parse returns: " + err)
             return false;
         }
-                    else
+
-                    {
         // If the file format is valid.
-                        auto conf = JsonFromString(StringFromFile(configFile));
+        const auto conf = JsonFromString(StringFromFile(configFile));
-                        LOG(MODULE_SETTINGS,
+        LOG(MODULE_SETTINGS, "Found a config file, v=" + conf["config_version"].toString() + " path=" + path)
-                            "Path: " + path + " contains a config file, in version " + conf["config_version"].toVariant().toString())
         configFile.close();
         return true;
     }
-                }
-                else
-                {
-                    LOG(MODULE_SETTINGS, "File: " + configFile.fileName() + " cannot be opened!")
-                    return false;
-                }
-            }
-            catch (...)
-            {
-                LOG(MODULE_SETTINGS, "Exception raised when checking config: " + configFile.fileName())
-                // LOG(INIT, e->what())
-                QvMessageBoxWarn(nullptr, tr("Warning"), tr("Qv2ray cannot load the config file from here:") + NEWLINE + configFile.fileName());
-                return false;
-            }
-        }
-        else
-        {
-            return true;
-        }
-    }
 
     bool Qv2rayApplication::PreInitilize(int argc, char *argv[])
     {
-        QCoreApplication consoleApp(argc, argv);
         QString errorMessage;
 
-        const auto &args = consoleApp.arguments();
+        {
+            QCoreApplication coreApp(argc, argv);
+            const auto &args = coreApp.arguments();
             Qv2rayProcessArgument.path = args.first();
             Qv2rayProcessArgument.version = QV2RAY_VERSION_STRING;
             Qv2rayProcessArgument.data = args.join(" ");
@@ -287,6 +259,7 @@ namespace Qv2ray
                     break;
                 }
             }
+        }
         // noScaleFactors = disable HiDPI
         if (StartupOption.noScaleFactor)
         {

src/main.cpp

@@ -47,7 +47,10 @@ int main(int argc, char *argv[])
 #endif
     //
     // parse the command line before starting as a Qt application
-    Qv2rayApplication::PreInitilize(argc, argv);
+    if (!Qv2rayApplication::PreInitilize(argc, argv))
+    {
+        return -1;
+    }
     Qv2rayApplication app(argc, argv);
     if (app.SetupQv2ray())
     {
@@ -210,8 +213,8 @@ int main(int argc, char *argv[])
     {
         // Initialise Connection Handler
         PluginHost = new QvPluginHost();
-        ConnectionManager = new QvConfigHandler(qvApp);
+        ConnectionManager = new QvConfigHandler();
-        RouteManager = new RouteHandler(qvApp);
+        RouteManager = new RouteHandler();
 
 #ifdef Q_OS_LINUX
         qvApp->setFallbackSessionManagementEnabled(false);
@@ -234,6 +237,8 @@ int main(int argc, char *argv[])
         signal(SIGUSR2, [](int) { ConnectionManager->StopConnection(); });
 #endif
         auto rcode = app.exec();
+        delete ConnectionManager;
+        delete RouteManager;
         delete PluginHost;
         LOG(MODULE_INIT, "Quitting normally")
         return rcode;