internal static void RegisterLicense(string license, DateTime releaseDate)
{
if (string.IsNullOrEmpty(license))
{
throw new JSchemaException("License text is empty.");
}
string[] licenseParts = license.Trim().Split('-');
if (licenseParts.Length != 2)
{
throw new JSchemaException("Specified license text is invalid.");
}
if (!int.TryParse(licenseParts[0], NumberStyles.Integer, CultureInfo.InvariantCulture, out int licenseId))
{
throw new JSchemaException("Specified license text is invalid.");
}
byte[] licenseData;
try
{
licenseData = Convert.FromBase64String(licenseParts[1]);
}
catch
{
throw new JSchemaException("Specified license text is invalid.");
}
if (licenseData.Length <= 128)
{
throw new JSchemaException("Specified license text is invalid.");
}
LicenseDetails deserializedLicense;
using (MemoryStream ms = new MemoryStream(licenseData, 128, licenseData.Length - 128))
using (JsonTextReader reader = new JsonTextReader(new StreamReader(ms)))
{
JsonSerializer serializer = new JsonSerializer();
deserializedLicense = serializer.Deserialize <LicenseDetails>(reader);
}
byte[] data = deserializedLicense.GetSignificateData();
byte[] signature = SubArray(licenseData, 0, 128);
if (!CryptographyHelpers.ValidateData(data, signature))
{
throw new JSchemaException("License text does not match signature.");
}
if (deserializedLicense.Id != licenseId)
{
throw new JSchemaException("License ID does not match signature license ID.");
}
if (deserializedLicense.ExpiryDate < releaseDate)
{
string message = "License is not valid for this version of Json.NET Schema. License free upgrade date expired on {0}. This version of Json.NET Schema was released on {1}.".FormatWith(
CultureInfo.InvariantCulture,
deserializedLicense.ExpiryDate.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture),
releaseDate.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture));
throw new JSchemaException(message);
}
if (deserializedLicense.Type == LicenseType.Test)
{
throw new JSchemaException("Specified license is for testing only.");
}
SetRegisteredLicense(deserializedLicense);
}
private static LicenseDetails ReadLicenseData(DateTime releaseDate, string licenseBase64, int licenseId)
{
byte[] licenseData;
try
{
licenseData = Convert.FromBase64String(licenseBase64);
}
catch
{
throw new JSchemaException("Specified license text is invalid.");
}
if (licenseData.Length <= 128)
{
throw new JSchemaException("Specified license text is invalid.");
}
LicenseDetails deserializedLicense;
using (MemoryStream ms = new MemoryStream(licenseData, 128, licenseData.Length - 128))
using (JsonTextReader reader = new JsonTextReader(new StreamReader(ms)))
{
JsonSerializer serializer = new JsonSerializer();
deserializedLicense = serializer.Deserialize <LicenseDetails>(reader) !;
}
byte[] data = deserializedLicense.GetSignificateData();
byte[] signature = SubArray(licenseData, 0, 128);
if (!CryptographyHelpers.ValidateData(data, signature))
{
throw new JSchemaException("License text does not match signature.");
}
if (deserializedLicense.Id != licenseId)
{
throw new JSchemaException("License ID does not match signature license ID.");
}
if (deserializedLicense.ExpiryDate < releaseDate)
{
string message = "License is not valid for this version of Json.NET Schema. License free upgrade date expired on {0}. This version of Json.NET Schema was released on {1}.".FormatWith(
CultureInfo.InvariantCulture,
deserializedLicense.ExpiryDate.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture),
releaseDate.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture));
throw new JSchemaException(message);
}
const int unitTestLicenseId = 1002;
if (deserializedLicense.Type == LicenseType.Test && (deserializedLicense.ExpiryDate <= DateTime.UtcNow || deserializedLicense.Id == unitTestLicenseId))
{
string message = "Specified test license expiried on {0}.".FormatWith(
CultureInfo.InvariantCulture,
deserializedLicense.ExpiryDate.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture));
throw new JSchemaException(message);
}
return(deserializedLicense);
}
