Verify database version before import
This commit is contained in:
ByteHamster
parent
7e2fd0b1d7
commit
75e0d2d7e1
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@ -216,8 +216,8 @@ public class ImportExportPreferencesFragment extends PreferenceFragmentCompat {
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private void showExportErrorDialog(final Throwable error) {
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progressDialog.dismiss();
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final AlertDialog.Builder alert = new AlertDialog.Builder(getContext())
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.setNeutralButton(android.R.string.ok, (dialog, which) -> dialog.dismiss());
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final AlertDialog.Builder alert = new AlertDialog.Builder(getContext());
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alert.setPositiveButton(android.R.string.ok, (dialog, which) -> dialog.dismiss());
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alert.setTitle(R.string.export_error_label);
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alert.setMessage(error.getMessage());
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alert.show();
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@ -1,6 +1,8 @@
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package de.danoeh.antennapod.core.storage;
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import android.content.Context;
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import android.database.sqlite.SQLiteDatabase;
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import android.database.sqlite.SQLiteException;
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import android.net.Uri;
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import android.os.ParcelFileDescriptor;
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import android.util.Log;
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@ -14,21 +16,10 @@ import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.nio.channels.FileChannel;
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import java.util.Arrays;
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public class DatabaseExporter {
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private static final String TAG = "DatabaseExporter";
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private static final byte[] SQLITE3_MAGIC = "SQLite format 3\0".getBytes();
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public static boolean validateDB(Uri inputUri, Context context) throws IOException {
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try (InputStream inputStream = context.getContentResolver().openInputStream(inputUri)) {
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byte[] magicBuf = new byte[SQLITE3_MAGIC.length];
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if (inputStream.read(magicBuf) == magicBuf.length) {
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return Arrays.equals(SQLITE3_MAGIC, magicBuf);
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}
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}
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return false;
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}
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private static final String TEMP_DB_NAME = PodDBAdapter.DATABASE_NAME + "_tmp";
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public static void exportToDocument(Uri uri, Context context) throws IOException {
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ParcelFileDescriptor pfd = null;
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@ -78,14 +69,21 @@ public class DatabaseExporter {
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public static void importBackup(Uri inputUri, Context context) throws IOException {
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InputStream inputStream = null;
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try {
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if (!validateDB(inputUri, context)) {
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throw new IOException(context.getString(R.string.import_bad_file));
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File tempDB = context.getDatabasePath(TEMP_DB_NAME);
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inputStream = context.getContentResolver().openInputStream(inputUri);
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FileUtils.copyInputStreamToFile(inputStream, tempDB);
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SQLiteDatabase db = SQLiteDatabase.openDatabase(tempDB.getAbsolutePath(),
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null, SQLiteDatabase.OPEN_READONLY);
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if (db.getVersion() > PodDBAdapter.VERSION) {
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throw new IOException(context.getString(R.string.import_no_downgrade));
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}
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db.close();
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File currentDB = context.getDatabasePath(PodDBAdapter.DATABASE_NAME);
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inputStream = context.getContentResolver().openInputStream(inputUri);
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FileUtils.copyInputStreamToFile(inputStream, currentDB);
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} catch (IOException e) {
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currentDB.delete();
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FileUtils.moveFile(tempDB, currentDB);
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} catch (IOException | SQLiteException e) {
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Log.e(TAG, Log.getStackTraceString(e));
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throw e;
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} finally {
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@ -48,6 +48,7 @@ public class PodDBAdapter {
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private static final String TAG = "PodDBAdapter";
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public static final String DATABASE_NAME = "Antennapod.db";
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public static final int VERSION = 1090000;
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/**
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* Maximum number of arguments for IN-operator.
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@ -1336,8 +1337,6 @@ public class PodDBAdapter {
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* Helper class for opening the Antennapod database.
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*/
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private static class PodDBHelper extends SQLiteOpenHelper {
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private static final int VERSION = 1090000;
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/**
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* Constructor.
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*
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@ -1345,8 +1344,7 @@ public class PodDBAdapter {
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* @param name Name of the database
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* @param factory to use for creating cursor objects
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*/
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public PodDBHelper(final Context context, final String name,
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final CursorFactory factory) {
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public PodDBHelper(final Context context, final String name, final CursorFactory factory) {
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super(context, name, factory, VERSION, new PodDbErrorHandler());
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}
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@ -1369,10 +1367,8 @@ public class PodDBAdapter {
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}
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@Override
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public void onUpgrade(final SQLiteDatabase db, final int oldVersion,
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final int newVersion) {
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Log.w("DBAdapter", "Upgrading from version " + oldVersion + " to "
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+ newVersion + ".");
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public void onUpgrade(final SQLiteDatabase db, final int oldVersion, final int newVersion) {
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Log.w("DBAdapter", "Upgrading from version " + oldVersion + " to " + newVersion + ".");
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DBUpgrader.upgrade(db, oldVersion, newVersion);
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}
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}
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@ -572,6 +572,7 @@
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<string name="opml_import_ask_read_permission">Access to external storage is required to read the OPML file</string>
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<string name="import_select_file">Select file to import</string>
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<string name="import_ok">Import successful.\n\nPlease press OK to restart AntennaPod</string>
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<string name="import_no_downgrade">This database was exported with a newer version of AntennaPod. Your current installation does not yet know how to handle this file.</string>
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<!-- Sleep timer -->
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<string name="set_sleeptimer_label">Set sleep timer</string>
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@ -768,7 +769,6 @@
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<string name="cast_failed_to_play">Failed to start the playback of media</string>
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<string name="cast_failed_to_stop">Failed to stop the playback of media</string>
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<string name="cast_failed_to_pause">Failed to pause the playback of media</string>
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<!--<string name="cast_failed_to_connect">Could not connect to the device</string>-->
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<string name="cast_failed_setting_volume">Failed to set the volume</string>
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<string name="cast_failed_no_connection">No connection to the cast device is present</string>
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<string name="cast_failed_no_connection_trans">Connection to the cast device has been lost. Application is trying to re-establish the connection, if possible. Please wait for a few seconds and try again.</string>
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@ -786,7 +786,6 @@
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<string name="notification_channel_playing_description">Allows to control playback. This is the main notification you see while playing a podcast.</string>
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<string name="notification_channel_error">Errors</string>
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<string name="notification_channel_error_description">Shown if something went wrong, for example if download or gpodder sync fails.</string>
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<string name="import_bad_file">Invalid/corrupt file</string>
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<!-- Widget settings -->
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<string name="widget_settings">Widget settings</string>
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