refactor: new Setting::tlsTrustedClientssDb() method to return trusted client fingerprint db

src/apps/deskflow-gui/MainWindow.cpp

@@ -1146,8 +1146,7 @@ void MainWindow::setHostName()
 QString MainWindow::trustedFingerprintDb()
 {
   const bool isClient = m_coreProcess.mode() == CoreMode::Client;
-  const auto trustFile = isClient ? Settings::tlsTrustedServersDb() : kTlsFingerprintTrustedClientsFilename;
-  return QStringLiteral("%1/%2").arg(Settings::tlsDir(), trustFile);
+  return isClient ? Settings::tlsTrustedServersDb() : Settings::tlsTrustedClientsDb();
 }
 
 bool MainWindow::regenerateLocalFingerprints()

src/lib/common/Settings.cpp

@@ -176,6 +176,11 @@ const QString Settings::tlsTrustedServersDb()
   return QStringLiteral("%1/%2").arg(instance()->tlsDir(), kTlsFingerprintTrustedServersFilename);
 }
 
+const QString Settings::tlsTrustedClientsDb()
+{
+  return QStringLiteral("%1/%2").arg(instance()->tlsDir(), kTlsFingerprintTrustedClientsFilename);
+}
+
 void Settings::setValue(const QString &key, const QVariant &value)
 {
   if (instance()->m_settings->value(key) == value)

src/lib/common/Settings.h

@@ -144,6 +144,7 @@ public:
   static const QString tlsDir();
   static const QString tlsLocalDb();
   static const QString tlsTrustedServersDb();
+  static const QString tlsTrustedClientsDb();
   static const QString logLevelText();
   static QSettingsProxy &proxy();
   static void save(bool emitSaving = true);

src/lib/net/SecureSocket.cpp

@@ -448,9 +448,7 @@ int SecureSocket::secureAccept(int socket)
   // If not fatal and no retry, state is good
   if (retry == 0) {
     if (m_securityLevel == SecurityLevel::PeerAuth) {
-      std::string dbDir = deskflow::string::sprintf(
-          "%s/%s", Settings::tlsDir().toStdString().c_str(), kTlsFingerprintTrustedClientsFilename
-      );
+      std::string dbDir = Settings::tlsTrustedClientsDb().toStdString().c_str();
       if (!verifyCertFingerprint(dbDir)) {
         retry = 0;
         disconnect();