android: Add repository for managed trusted certificates

src/frontends/android/app/src/main/java/org/strongswan/android/data/ManagedTrustedCertificateRepository.java

@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2023 Relution GmbH
+ *
+ * Copyright (C) secunet Security Networks AG
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+package org.strongswan.android.data;
+
+import android.database.Cursor;
+
+import org.strongswan.android.logic.TrustedCertificateManager;
+
+import java.security.cert.X509Certificate;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+public class ManagedTrustedCertificateRepository extends ManagedCertificateRepository<ManagedTrustedCertificate>
+{
+	private static final DatabaseHelper.DbTable TABLE = DatabaseHelper.TABLE_TRUSTED_CERTIFICATE;
+
+	public ManagedTrustedCertificateRepository(
+		@NonNull final ManagedConfigurationService managedConfigurationService,
+		@NonNull final DatabaseHelper databaseHelper)
+	{
+		super(managedConfigurationService, databaseHelper, TABLE);
+	}
+
+	@Nullable
+	@Override
+	protected ManagedTrustedCertificate getCertificate(@NonNull ManagedVpnProfile vpnProfile)
+	{
+		return vpnProfile.getTrustedCertificate();
+	}
+
+	@NonNull
+	@Override
+	protected ManagedTrustedCertificate createCertificate(@NonNull Cursor cursor)
+	{
+		return new ManagedTrustedCertificate(cursor);
+	}
+
+	@Override
+	protected boolean isInstalled(@NonNull ManagedTrustedCertificate certificate)
+	{
+		TrustedCertificateManager certificateManager = TrustedCertificateManager.getInstance();
+		final X509Certificate x509Certificate = certificateManager.getCACertificateFromAlias(certificate.getAlias());
+
+		return x509Certificate != null;
+	}
+}