diff options
| -rw-r--r-- | app/src/main/java/de/danoeh/antennapod/activity/ImportExportActivity.java | 30 | ||||
| -rw-r--r-- | core/src/main/res/values/strings.xml | 1 |
2 files changed, 30 insertions, 1 deletions
diff --git a/app/src/main/java/de/danoeh/antennapod/activity/ImportExportActivity.java b/app/src/main/java/de/danoeh/antennapod/activity/ImportExportActivity.java index e6c9c37cc..9795c1240 100644 --- a/app/src/main/java/de/danoeh/antennapod/activity/ImportExportActivity.java +++ b/app/src/main/java/de/danoeh/antennapod/activity/ImportExportActivity.java @@ -23,6 +23,7 @@ import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.nio.channels.FileChannel; +import java.util.Arrays; import de.danoeh.antennapod.R; import de.danoeh.antennapod.core.preferences.UserPreferences; @@ -109,9 +110,14 @@ public class ImportExportActivity extends AppCompatActivity { } private void restoreFrom(Uri inputUri) { - File currentDB = getDatabasePath(PodDBAdapter.DATABASE_NAME); InputStream inputStream = null; try { + if (!validateDB(inputUri)) { + displayBadFileDialog(); + return; + } + + File currentDB = getDatabasePath(PodDBAdapter.DATABASE_NAME); inputStream = getContentResolver().openInputStream(inputUri); FileUtils.copyInputStreamToFile(inputStream, currentDB); displayImportSuccessDialog(); @@ -123,6 +129,28 @@ public class ImportExportActivity extends AppCompatActivity { } } + private static final byte[] SQLITE3_MAGIC = "SQLite format 3\0".getBytes(); + private boolean validateDB(Uri inputUri) throws IOException { + try (InputStream inputStream = getContentResolver().openInputStream(inputUri)) { + byte[] magicBuf = new byte[SQLITE3_MAGIC.length]; + if (inputStream.read(magicBuf) == magicBuf.length) { + return Arrays.equals(SQLITE3_MAGIC, magicBuf); + } + } + + return false; + } + + private void displayBadFileDialog() { + AlertDialog.Builder d = new AlertDialog.Builder(ImportExportActivity.this); + d.setMessage(R.string.import_bad_file) + .setCancelable(false) + .setPositiveButton(android.R.string.ok, ((dialogInterface, i) -> { + // do nothing + })) + .show(); + } + private void displayImportSuccessDialog() { AlertDialog.Builder d = new AlertDialog.Builder(ImportExportActivity.this); d.setMessage(R.string.import_ok); diff --git a/core/src/main/res/values/strings.xml b/core/src/main/res/values/strings.xml index add2dfe14..a02247625 100644 --- a/core/src/main/res/values/strings.xml +++ b/core/src/main/res/values/strings.xml @@ -796,4 +796,5 @@ <string name="notification_channel_playing_description">Allows to control playback. This is the main notification you see while playing a podcast.</string> <string name="notification_channel_error">Errors</string> <string name="notification_channel_error_description">Shown if something went wrong, for example if download or gpodder sync fails.</string> + <string name="import_bad_file">Invalid/corrupt file</string> </resources> |