/// <summary>
/// Decodes asynchronously the string representation of this object
/// </summary>
/// <param name="verify">Verifies if the token is valid</param>
/// <returns></returns>
public Task DecodeAsync(bool verify)
{
var task = Task.Run(() =>
{
DateTime startTime = DateTime.Now;
// Checking if token is empty, and raising an exception if true
if (string.IsNullOrEmpty(Token))
{
throw new ArgumentNullException("Token");
}
// breaking the token into the constituting parts and checking if there is any signature present
// on a valid token we need to always have a three part token, even if the signature is
// not present there should always be 2 dots.
string[] parts = Token.Split('.');
if (parts.Count() < 3)
{
throw new ArgumentException("Token not correcty constructed.");
}
// Decoding the header and the payload for verification and parse
string decodedHeader = parts[0].Base64UrlDecode().GetString();
string decodedPayload = parts[1].Base64UrlDecode().GetString();
string signature = parts[2];
// setting the raw header and raw payload properties values
RawHeader = decodedHeader;
RawPayload = decodedPayload;
// trying to parse the header into a JoseHeader as expected
JoseHeader.TryParse(decodedHeader, out JoseHeader header);
Header = header;
// Trying to parse the payload into a JWT Claim, if this is not the case we will store the raw data and
// a string as a payload to later be analized
JsonWebTokenClaim.TryParse(decodedPayload, out JsonWebTokenClaim claim);
if (claim != null)
{
Payload = claim;
}
else
{
Payload = decodedPayload;
}
//Checking if we can verify the token
if ((Header?.Algorithm != JWTAlgorithm.Empty || Header?.Algorithm != JWTAlgorithm.none) &&
!string.IsNullOrEmpty(signature))
{
if (verify)
{
Verify();
}
}
TimeSpan ts = DateTime.Now.Subtract(startTime);
Console.WriteLine($"=> Decode took: {ts.Milliseconds}");
});
return(task);
}
public static bool TryParse(IDictionary <string, object> inputDic, out JsonWebTokenClaim claim)
{
claim = null;
try
{
claim = new JsonWebTokenClaim();
foreach (var item in inputDic)
{
claim.Add(item.Key, item.Value);
}
return(true);
}
catch { }
return(false);
}
public static bool TryParse(string input, out JsonWebTokenClaim claim)
{
claim = null;
Dictionary <string, object> items = null;
IJsonSerializer jsonSerializer = new DefaultJsonSerializer();
try
{
items = jsonSerializer.Deserialize <Dictionary <string, object> >(input);
if (items != null)
{
claim = new JsonWebTokenClaim();
foreach (var item in items)
{
claim.Add(item.Key, item.Value);
}
}
return(true);
}
catch { }
return(false);
}
