private async Task<DataBlock> GetDataBlockInt(int block)
{
var db = dataBlocks[block];
if (db != null)
return db;
if (card.ActiveSector != sector)
{
if (!await card.Reader.Login(sector, InternalKeyType.KeyA))
{
// In some cases, Key A may not be present, so try logging in with Key B
if (!await card.Reader.Login(sector, InternalKeyType.KeyB))
{
throw new CardLoginException($"Unable to login in sector {sector} with key A or B");
}
}
var res = await card.Reader.Read(sector, block);
if (!res.Item1)
throw new CardReadException($"Unable to read from sector {sector}, block {block}");
db = new DataBlock(block, res.Item2, (block == TrailerBlockIndex));
dataBlocks[block] = db;
}
return db;
}
private async Task FlushDataBlock(DataBlock dataBlock)
{
if (card.ActiveSector != sector)
{
var writeKey = GetWriteKey(dataBlock.Number);
if (!await card.Reader.Login(sector, writeKey))
throw new CardLoginException($"Unable to login in sector {sector} with key {writeKey}");
card.ActiveSector = sector;
}
if (!await card.Reader.Write(sector, dataBlock.Number, dataBlock.Data))
throw new CardWriteException($"Unable to write in sector {sector}, block {dataBlock.Number}");
}
