Use aboutToQuit() signal for cleanup-code

As recommended by the Qt documentation

gui/initiategui.cpp

@@ -10,23 +10,32 @@
 #include <qtutilities/resources/resources.h>
 #include <qtutilities/settingsdialog/qtsettings.h>
 
+#include <passwordfile/util/openssl.h>
+
 #include <QApplication>
 #include <QFile>
 #include <QSettings>
 
 using namespace CppUtilities;
 using namespace QtUtilities;
+using namespace Util;
 
 namespace QtGui {
 
 int runWidgetsGui(int argc, char *argv[], const QtConfigArguments &qtConfigArgs, const QString &file)
 {
     SET_QT_APPLICATION_INFO;
+
+    // init OpenSSL
+    OpenSsl::init();
+
     // init application
-    QApplication a(argc, argv);
+    QApplication application(argc, argv);
+
     // restore Qt settings
     QtSettings qtSettings;
     QSettings settings(QSettings::IniFormat, QSettings::UserScope, QStringLiteral(PROJECT_NAME));
+
     // move old config to new location
     const QString oldConfig
         = QSettings(QSettings::IniFormat, QSettings::UserScope, QApplication::organizationName(), QApplication::applicationName()).fileName();
@@ -34,19 +43,20 @@ int runWidgetsGui(int argc, char *argv[], const QtConfigArguments &qtConfigArgs,
     settings.sync();
     qtSettings.restore(settings);
     qtSettings.apply();
+
     // apply settings specified via command line args
     qtConfigArgs.applySettings(qtSettings.hasCustomFont());
     LOAD_QT_TRANSLATIONS;
+
     // init widgets GUI
     MainWindow w(settings, &qtSettings);
     w.show();
     if (!file.isEmpty()) {
         w.openFile(file);
     }
+
     // start event loop
-    int res = a.exec();
-    // save Qt settings
-    qtSettings.save(settings);
-    return res;
+    QObject::connect(&application, &QCoreApplication::aboutToQuit, &OpenSsl::clean);
+    return application.exec();
 }
 } // namespace QtGui

gui/mainwindow.cpp

@@ -286,10 +286,12 @@ void MainWindow::closeEvent(QCloseEvent *event)
         event->ignore();
         return;
     }
+
     // close undow view
     if (m_undoView) {
         m_undoView->close();
     }
+
     // save settings
     m_settings.beginGroup(QStringLiteral("mainwindow"));
     m_settings.setValue(QStringLiteral("geometry"), saveGeometry());
@@ -307,6 +309,9 @@ void MainWindow::closeEvent(QCloseEvent *event)
     }
     m_settings.setValue(QStringLiteral("pwvisibility"), pwVisibility);
     m_settings.endGroup();
+    if (m_qtSettings) {
+        m_qtSettings->save(m_settings);
+    }
 }
 
 void MainWindow::timerEvent(QTimerEvent *event)
@@ -328,7 +333,6 @@ void MainWindow::showSettingsDialog()
             m_settingsDlg->setWindowTitle(tr("Qt settings"));
             m_settingsDlg->setSingleCategory(m_qtSettings->category());
         }
-        //connect(m_settingsDlg, &SettingsDialog::applied, this, &MainWindow::settingsAccepted);
     }
     if (m_settingsDlg->isHidden()) {
         m_settingsDlg->showNormal();

main.cpp

@@ -16,6 +16,7 @@
 #include <c++utilities/misc/parseerror.h>
 
 #if defined(PASSWORD_MANAGER_GUI_QTWIDGETS) || defined(PASSWORD_MANAGER_GUI_QTQUICK)
+#include <QCoreApplication>
 #include <QString>
 #include <qtutilities/resources/qtconfigarguments.h>
 ENABLE_QT_RESOURCES_OF_STATIC_DEPENDENCIES
@@ -68,18 +69,22 @@ int main(int argc, char *argv[])
     parser.parseArgs(argc, argv);
 #endif
 
-    // init OpenSSL
-    OpenSsl::init();
-
 #ifndef PASSWORD_MANAGER_FORCE_GUI
     // start either interactive CLI or GUI
     if (cliArg.isPresent()) {
+        // init OpenSSL
+        OpenSsl::init();
+
         Cli::InteractiveCli cli;
         if (fileArg.isPresent()) {
             cli.run(fileArg.firstValue());
         } else {
             cli.run();
         }
+
+        // clean OpenSSL
+        OpenSsl::clean();
+
     } else if (qtConfigArgs.areQtGuiArgsPresent()) {
 #if defined(PASSWORD_MANAGER_GUI_QTWIDGETS) || defined(PASSWORD_MANAGER_GUI_QTQUICK)
         const auto file(fileArg.isPresent() ? QString::fromLocal8Bit(fileArg.firstValue()) : QString());
@@ -117,8 +122,5 @@ int main(int argc, char *argv[])
 #endif
 #endif
 
-    // clean OpenSSL
-    OpenSsl::clean();
-
     return returnCode;
 }

quickgui/initiatequick.cpp

@@ -13,6 +13,8 @@
 #include <qtutilities/resources/qtconfigarguments.h>
 #include <qtutilities/resources/resources.h>
 
+#include <passwordfile/util/openssl.h>
+
 #include <QGuiApplication>
 #include <QIcon>
 #include <QQmlApplicationEngine>
@@ -30,6 +32,7 @@
 #endif
 
 using namespace CppUtilities;
+using namespace Util;
 
 namespace QtGui {
 
@@ -45,13 +48,16 @@ int runQuickGui(int argc, char *argv[], const QtConfigArguments &qtConfigArgs, c
         qputenv("XDG_CURRENT_DESKTOP", QByteArray("please don't override my settings"));
     }
 
+    // init OpenSSL
+    OpenSsl::init();
+
     // init application
     SET_QT_APPLICATION_INFO;
     QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
 #ifdef PASSWORD_MANAGER_GUI_QTWIDGETS
-    QApplication a(argc, argv);
+    QApplication application(argc, argv);
 #else
-    QGuiApplication a(argc, argv);
+    QGuiApplication application(argc, argv);
 #endif
 
     // apply settings specified via command line args
@@ -88,12 +94,13 @@ int runQuickGui(int argc, char *argv[], const QtConfigArguments &qtConfigArgs, c
 #endif
     auto *const context(engine.rootContext());
     context->setContextProperty(QStringLiteral("nativeInterface"), &controller);
-    context->setContextProperty(QStringLiteral("app"), &a);
+    context->setContextProperty(QStringLiteral("app"), &application);
     context->setContextProperty(QStringLiteral("description"), QStringLiteral(APP_DESCRIPTION));
     context->setContextProperty(QStringLiteral("dependencyVersions"), QStringList(DEPENCENCY_VERSIONS));
     engine.load(QUrl(QStringLiteral("qrc:/qml/main.qml")));
 
     // run event loop
-    return a.exec();
+    QObject::connect(&application, &QCoreApplication::aboutToQuit, &OpenSsl::clean);
+    return application.exec();
 }
 } // namespace QtGui