public override Copyright Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
{
if (reader.TokenType is not JsonTokenType.StartObject)
{
throw new JsonException();
}
string text = string.Empty;
CopyrightType type = default;
while (reader.Read())
{
if (reader.TokenType is JsonTokenType.EndObject)
{
break;
}
if (reader.TokenType is not JsonTokenType.PropertyName)
{
throw new JsonException();
}
var propertyName = reader.GetString();
reader.Read(); // Read to next token.
switch (propertyName)
{
case "text":
text = reader.GetString() !;
break;
case "type":
type = CopyrightTypeConverter.FromSpotifyString(reader.GetString() !);
break;
default:
reader.Skip();
break;
}
}
return(new(text, type));
}
/// <summary>
/// Returns the bus key of the MMC logical unit
/// </summary>
/// <returns><c>true</c> if the command failed and <paramref name="senseBuffer" /> contains the sense buffer.</returns>
/// <param name="buffer">Buffer where the bus key will be stored</param>
/// <param name="senseBuffer">Sense buffer.</param>
/// <param name="protectionType">The type of protection the logical unit reports</param>
/// <param name="timeout">Timeout in seconds.</param>
/// <param name="duration">Duration in milliseconds it took for the device to execute the command.</param>
public bool ReadBusKey(out byte[] buffer, out byte[] senseBuffer, CopyrightType protectionType, uint timeout,
out double duration)
{
duration = 0;
buffer = new byte[0];
senseBuffer = new byte[32];
bool sense = false;
byte[] challenge = new byte[_challengeSize];
byte[] key1 = new byte[_keySize];
byte variant = 0;
for (byte i = 0; i < 4; i++)
{
// Invalidate AGID to reset any previous drive communications
Agid = i;
sense = InvalidateAgid(out buffer, out senseBuffer, DvdCssKeyClass.DvdCssCppmOrCprm, timeout,
out duration);
// Get AGID
if (protectionType == CopyrightType.CSS)
{
sense = ReportAgidCssCppm(out buffer, out senseBuffer, DvdCssKeyClass.DvdCssCppmOrCprm, timeout,
out duration);
}
if (protectionType == CopyrightType.CPRM)
{
throw new NotImplementedException();
}
if (!sense)
{
Agid = (byte)(buffer[7] >> 6);
break;
}
}
if (sense)
{
return(true);
}
for (byte i = 0; i < _challengeSize; i++)
{
challenge[i] = i;
}
sense = SendChallenge(out buffer, out senseBuffer, DvdCssKeyClass.DvdCssCppmOrCprm, challenge, timeout,
out duration);
if (sense)
{
return(true);
}
sense = ReportKey1(out buffer, out senseBuffer, DvdCssKeyClass.DvdCssCppmOrCprm, timeout, out duration);
if (sense)
{
return(true);
}
for (byte i = 0; i < _keySize; i++)
{
key1[i] = buffer[8 - i];
}
for (byte i = 0; i < 32; i++)
{
CSS.EncryptKey(DvdCssKeyType.Key1, i, challenge, out byte[] keyCheck);
if (key1.SequenceEqual(keyCheck))
{
variant = i;
break;
}
if (i >= 31)
{
senseBuffer = null;
return(true);
}
}
sense = ReportChallenge(out buffer, out senseBuffer, DvdCssKeyClass.DvdCssCppmOrCprm, timeout,
out duration);
if (sense)
{
return(true);
}
for (byte i = 0; i < _challengeSize; i++)
{
challenge[i] = buffer[13 - i];
}
CSS.EncryptKey(DvdCssKeyType.Key2, variant, challenge, out byte[] key2);
sense = SendKey2(out buffer, out senseBuffer, DvdCssKeyClass.DvdCssCppmOrCprm, key2, timeout, out duration);
if (sense)
{
return(true);
}
key1.CopyTo(challenge, 0);
key2.CopyTo(challenge, key1.Length);
CSS.EncryptKey(DvdCssKeyType.BusKey, variant, challenge, out buffer);
BusKey = buffer;
return(false);
}
public static string ToSpotifyString(this CopyrightType copyrightType) => copyrightType switch
{
