public static CheckDiscStorageResult CheckDiscStorage(Storage _storage, string path)
{
var checksumData = _storage.ReadFileBytes(path + ".checksums");
if (checksumData != null)
{
var checksum = new ChecksumInfo(checksumData);
var error = false;
using (var headerStream = _storage.FileReadStream(path + ".header"))
{
var valid = checksum.Valid("header", headerStream);
if (!valid)
{
error = true;
}
}
using (var headerStream = _storage.FileReadStream(path + ".data"))
{
var valid = checksum.Valid("data", headerStream);
if (!valid)
{
error = true;
}
}
if (checksum.Get("lookup") != null)
{
using (var headerStream = _storage.FileReadStream(path + ".lookup"))
{
var valid = checksum.Valid("lookup", headerStream);
if (!valid)
{
error = true;
}
}
}
if (error)
{
return(CheckDiscStorageResult.CheckumFailed);
}
}
else
{
var error = false;
var header = GetHeader(_storage, path);
if (header == null)
{
return(CheckDiscStorageResult.HeaderNotFound);
}
using (var storage = new DiscStorage(_storage, path, header.BlockSize, header.UserData.Length, header.Flags | DiscStorageFlags.Readonly))
{
for (var i = storage.StartIndex; i <= storage.EndIndex; i++)
{
if (!storage.BlockDataCrcValidRawIndex(i))
{
error = true;
break;
}
}
}
if (error)
{
return(CheckDiscStorageResult.DataCrcError);
}
return(CheckDiscStorageResult.MissingChecksum);
}
return(CheckDiscStorageResult.Ok);
}
public static int GetHeaderSize(DiscStorage storage)
{
return(((4 + 4 + 8) + (8 + 8 + 8) + (8 + 8)) + 4 + storage._header.UserData.Length);
}
public static int GetEntrySize(DiscStorage storage)
{
return(8 + 4 + 2 + 2);
}