hardcoresushi
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DroidFS
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Repair corrupted database due to v2.1.1

This commit is contained in:
Matéo Duparc 2023-09-19 13:39:35 +02:00
parent 571a79cc1d
commit b2154d319e
Signed by: hardcoresushi
GPG Key ID: AFE384344A45E13A
1 changed files with 31 additions and 0 deletions
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31
app/src/main/java/sushi/hardcore/droidfs/VolumeDatabase.kt
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@ -39,6 +39,37 @@ class VolumeDatabase(private val context: Context): SQLiteOpenHelper(context, Co
File(context.filesDir, VolumeData.VOLUMES_DIRECTORY).mkdir()
}
override fun onOpen(db: SQLiteDatabase) {
//check if database has been corrupted by v2.1.1
val cursor = db.rawQuery("SELECT * FROM $TABLE_NAME WHERE $COLUMN_TYPE IS NULL;", null)
if (cursor.count > 0) {
Log.w(TAG, "Found ${cursor.count} corrupted volumes")
while (cursor.moveToNext()) {
// fix columns left shift
val uuid = cursor.getString(cursor.getColumnIndexOrThrow(COLUMN_UUID)+5)
val name = cursor.getString(cursor.getColumnIndexOrThrow(COLUMN_NAME)-1)
val isHidden = cursor.getShort(cursor.getColumnIndexOrThrow(COLUMN_HIDDEN)-1) == 1.toShort()
val type = cursor.getBlob(cursor.getColumnIndexOrThrow(COLUMN_TYPE)-1)[0]
val hash = cursor.getBlob(cursor.getColumnIndexOrThrow(COLUMN_HASH)-1)
val iv = cursor.getBlob(cursor.getColumnIndexOrThrow(COLUMN_IV)-1)
if (db.delete(TABLE_NAME, "$COLUMN_IV=?", arrayOf(uuid)) < 1) {
Log.e(TAG, "Failed to remove volume $name")
}
if (db.insert(TABLE_NAME, null, ContentValues().apply {
put(COLUMN_UUID, uuid)
put(COLUMN_NAME, name)
put(COLUMN_HIDDEN, isHidden)
put(COLUMN_TYPE, byteArrayOf(type))
put(COLUMN_HASH, hash)
put(COLUMN_IV, iv)
}) < 0) {
Log.e(TAG, "Failed to insert volume $name")
}
}
}
cursor.close()
}
private fun getNewVolumePath(volumeName: String): File {
return File(
VolumeData.getFullPath(volumeName, true, context.filesDir.path)