feat(context): add support for offline and pinentry config

* Load and display new environment config options for offline GnuPG
  mode and custom pinentry program path
* Improves transparency of application startup parameters for users

Author: saturneric

src/GpgFrontendContext.cpp

@@ -39,20 +39,31 @@ namespace GpgFrontend {
 
 void GpgFrontendContext::load_env_conf_set_properties() {
   auto env_config = QDir::currentPath() + "/ENV.ini";
-  if (!QFileInfo(env_config).exists()) return;
+  if (!QFileInfo(env_config).exists()) {
+    qInfo() << "No ENV.ini found, skipping loading environment config.";
+    return;
+  }
 
   QSettings s(env_config, QSettings::IniFormat);
 
   property("GFSelfCheck", s.value("SelfCheck", false).toBool());
   property("GFSecureLevel", s.value("SecureLevel", 0).toInt());
   property("GFPortableMode", s.value("PortableMode", false).toBool());
+  property("GFGnuPGOfflineMode", s.value("GnuPGOfflineMode", false).toBool());
+  property("GFPinentryProgramPath",
+           s.value("PinentryProgramPath", "").toString());
 
+  // Set ShowConsoleOnWindows property
   property("GFShowConsoleOnWindows",
            s.value("ShowConsoleOnWindows", false).toBool());
 
   qInfo() << "ENV" << "GFSelfCheck" << property("GFSelfCheck").toInt();
   qInfo() << "ENV" << "GFSecureLevel" << property("GFSecureLevel").toInt();
   qInfo() << "ENV" << "GFPortableMode" << property("GFPortableMode").toBool();
+  qInfo() << "ENV" << "GFGnuPGOfflineMode"
+          << property("GFGnuPGOfflineMode").toBool();
+  qInfo() << "ENV" << "GFPinentryProgramPath"
+          << property("GFPinentryProgramPath").toString();
 
   qInfo() << "ENV" << "GFShowConsoleOnWindows"
           << property("GFShowConsoleOnWindows").toBool();

src/ui/dialog/help/AboutDialog.cpp

@@ -193,6 +193,9 @@ StatusTab::StatusTab(QWidget* parent) : QWidget(parent) {
   const int secure_level = qApp->property("GFSecureLevel").toInt();
   const bool portable_mode = qApp->property("GFPortableMode").toBool();
   const bool self_check = qApp->property("GFSelfCheck").toBool();
+  const bool gnupg_offline_mode = qApp->property("GFGnuPGOfflineMode").toBool();
+  const QString pinentry_program_path =
+      qApp->property("GFPinentryProgramPath").toString();
 
   auto* main_layout = new QVBoxLayout(this);
   auto* status_form = new QFormLayout();
@@ -225,10 +228,23 @@ StatusTab::StatusTab(QWidget* parent) : QWidget(parent) {
   const QString self_check_str =
       self_check ? tr("Self-Check Active") : tr("Self-Check Disabled");
 
+  // GnuPG Offline Mode string
+  const QString gnupg_offline_mode_str =
+      gnupg_offline_mode ? tr("Active") : tr("Disabled");
+
+  // Pinentry Program Path string
+  const QString pinentry_program_path_str = pinentry_program_path.isEmpty()
+                                                ? tr("Default Pinentry Program")
+                                                : pinentry_program_path;
+
   // Add rows to form
   status_form->addRow(tr("Security Level:"), new QLabel(secure_level_str));
   status_form->addRow(tr("Running Mode:"), new QLabel(portable_mode_str));
   status_form->addRow(tr("Self-Check Status:"), new QLabel(self_check_str));
+  status_form->addRow(tr("GnuPG Offline Mode:"),
+                      new QLabel(gnupg_offline_mode_str));
+  status_form->addRow(tr("Pinentry Program Path:"),
+                      new QLabel(pinentry_program_path_str));
 
   auto* tip_label = new QLabel(tr(
       "Tips: The above parameters reflect how the application was started. "));